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AAON INC (AAON)

AAON, Inc. and its subsidiaries engage in the engineering, manufacture, and marketing of air-conditioning and heating equipment principally in the United States. The company's primary products include standardized and custom rooftop units; a single unit system containing heating, cooling, and/or heat recovery components in a self-contained cabinet; coils consisting of a sheet metal casing with tubing and fins; air-handling units consisting of coils, blowers, and filters; condensing units comprising coils, fans, and compressors; chillers; make-up air units; and heat recovery units. AAON sells its products to property owners and contractors through direct sales force and manufacturers'' representatives. The company was incorporated in 1987 and is based in Tulsa, Oklahoma.


AMCOL INTERNATIONAL CORPORATION (ACO)

AMCOL International Corporation operates as a specialty minerals company. The company operates in three segments: Minerals, Environmental, and Transportation. The minerals segment mines, processes, and distributes clays and products with similar applications to various industrial and consumer markets. It provides sodium bentonite and calcium bentonite for use in foundry and casting, detergent, iron ore pelletizing, well drilling, agricultural, construction, and other industries; specialty minerals for suppliers of gelling, binding, thickening, plasticizing, and emulsifying agents for cosmetics, pharmaceuticals, drilling fluids, or household products; and supplies cat litter and specialty pet products to grocery and drug stores, mass merchandisers, wholesale clubs, and pet specialty stores. The Environmental segment processes and distributes clays and products with similar applications for use as a moisture barrier in commercial construction, landfill liners, and in various other industrial and commercial applications. The Transportation segment includes a long-haul trucking business and a freight brokerage business, which delivers finished products throughout the continental United States. The company was incorporated in 1924 as Bentonite Mining & Manufacturing Company. It changed its name to American Colloid Company in 1927 and to AMCOL International Corporation in 1995. AMCOL International is headquartered in Arlington Heights, Illinois.


AMERON INTERNATIONAL CORPORATION (AMN)

Ameron International Corporation manufactures engineered products and materials for the chemical, industrial, energy, transportation, and infrastructure markets. It has four groups: Performance Coatings and Finishes (PCF), Fiberglass-Composite Pipe (FCP), Water Transmission, and Infrastructure Products. The PCF group offers coatings and surfacer systems worldwide. Its products are used to preserve structures, such as metallic and concrete facilities and equipment from degradation by corrosion, abrasion, marine fouling, and other forms of chemical and physical attack. It markets its products to marine, offshore, petrochemical, power generation, chemical, steel, and pulp and paper industries. The FCP group provides filament-wound and molded composite fiberglass pipe and fittings for various process industries, including industrial, petroleum, chemical processing, and petrochemical industries for service station piping systems, aboard marine vessels, and offshore oil platforms. The Water Transmission group offers concrete and prestressed concrete cylinder pipe, steel pipe, and reinforced concrete pipe for water transmission, storm and industrial waste water, and sewage collection. Its customers include local, state, and federal agencies; developers; and general contractors. The Infrastructure Products group supplies ready-mix concrete, crushed and sized basaltic aggregates, dune sand, concrete pipe, and box culverts primarily to the construction industry in Hawaii. It also offers concrete and steel poles for highway, street and outdoor area lighting, and for traffic signals in the U.S. Ameron markets its products through direct sale force, manufacturers' representatives, distributors, and licensees. The company, formerly known as American Concrete Pipe Co., was founded in 1907. It changed its name to American Pipe and Construction Co in 1942; to Ameron, Inc. in 1970; and to Ameron International Corporation in 1996. Ameron is headquartered in Pasadena, California.


AMERICAN WOODMARK CORPORATION (AMWD)

American Woodmark Corporation engages in the manufacture and distribution of kitchen cabinets and vanities for the remodeling and new home construction markets in the United States. The company offers framed stock cabinets in approximately 320 cabinet lines in 80 door designs in 9 colors. Stock cabinets consist of a common box with interior components, as well as an oak, cherry, maple, or hickory front frame. The company services its markets through three primary channels: home centers, builders, and independent dealers and distributors. American Woodmark distributes its products to each market channel directly from six assembly plants through a third party logistics network. As of July 31, 2005, the company operated 15 manufacturing facilities and 10 service centers. American Woodmark was formed in 1980 and is headquartered in Winchester, Virginia.


APOGEE ENTERPRISES INC (APOG)

Apogee Enterprises, Inc., through its subsidiaries, engages in the design and development of glass products, services, and systems. The company operates in three segments: Architectural Products and Services, Large-Scale Optical Technologies, and Automotive Replacement Glass and Services. The Architectural Products and Services segment designs, engineers, fabricates, installs, maintains, and renovates the walls of glass and windows comprising the outside skin of commercial and institutional buildings, as well as offers paint and anodizing coating services for metal and plastic components used in window and curtainwall systems, and other products. This segment also provides repair and replacement of damaged glass, including commercial glass replacement, repair of doors, custom mirror work, and security glass. Its customers include general contractors, building owners, architects, and glazing subcontractors in the nonresidential commercial construction market. The company markets' this segments' products primarily in North America through a network of independent distributors and direct sales staff. The Large-Scale Optical Technologies segment manufactures glass and acrylic products for the custom framing and preframed art markets, as well as produces optical thin film coatings for consumer electronics displays, such as projection televisions and computer screens. These products are distributed through independent distributors in North America and to a limited extent in Europe, Australia, and New Zealand. The Automotive Replacement Glass and Services segment fabricates aftermarket automobile windshields and windows, and recreational vehicle and bus windshields. It serves primarily the domestic market of foreign and domestic automotive replacement glass, and original equipment manufacturers' windshields for recreational vehicles and buses. The company was founded in 1949 and is headquartered in Minneapolis, Minnesota.


ALLIED WASTE INDUSTRIES INC (AW)

Allied Waste Industries, Inc. operates as a nonhazardous solid waste management company in the United States. The company provides waste collection, transfer, recycling, and disposal services for residential, commercial, and industrial customers in the United States and Puerto Rico. Its collection operations include collecting and transporting nonhazardous waste from the point of generation to the site of disposal. The company's recycling collection services include curbside collection of recyclable materials for residential customers, as well as commercial and industrial collection of recyclable materials. As of December 31, 2004, the company operated through a network of 314 collection companies, 165 transfer stations, 166 landfills, and 58 recycling facilities. Allied Waste Industries was founded in 1987 and is headquartered in Scottsdale, Arizona.


AVALON HOLDINGS CORPORATION (AWX)

Avalon Holdings Corporation provides waste management services and golf and related operations. The waste management services segment offer hazardous and nonhazardous waste brokerage and management services and captive landfill management operations. It serves industrial, commercial, municipal, and governmental customers primarily in selected northeastern and midwestern United States markets. The golf and related operations segment includes the operation and management of two golf courses, dining and banquet facilities, and a travel agency. Avalon Holdings was formed in 1998 and is headquartered in Warren, Ohio.


AMREP CORPORATION (AXR)

AMREP Corporation, through its subsidiaries, engages in the real estate, fulfillment services, and newsstand distribution businesses. It develops both residential lots and sites for commercial and industrial use, as well as secures entitlements for development tracts for sale to homebuilders. As of April 30, 2005, the company owned approximately 19,550 acres of land in Rio Rancho, 55,000 square foot of office building, and a 30,000 square foot commercial rental property in Rio Rancho, as well as 2 tracts of land properties located in Colorado. Its fulfillment services include magazine subscription fulfillment services, lettershop and graphics arts services, customer telephone support, list services, and product fulfillment services. The magazine subscription fulfillment services comprise processing new orders, receiving payments, preparing and mailing renewal and statement notifications, maintaining subscriber lists and databases, processing Internet orders, and printing forms and promotional materials. The list services comprise maintaining client customer lists, merging rented lists with a client's list, and sorting and sequencing mailing labels. The company receives, warehouses, processes, and ships merchandise as part of its product fulfillment services. AMREP distributes automotive, men's sophisticates, comics, puzzle, romance, and sports magazines for publishers. The company was founded in 1955 and is based in New York City.


BEAZER HOMES USA INC (BZH)

Beazer Homes USA, Inc. engages primarily in the design, building, and sale of single-family homes in the United States. It offers economy homes primarily to entry-level buyers, value homes to entry-level and move-up buyers, and style homes to move-up buyers, as well as homes to buyers over 55 years of age. The company also provides mortgage origination and title services to its homebuyers. It sells its homes through commissioned employees and independent brokers. As of September 30, 2005, the company maintained 683 model homes, of which 490 were owned and 193 were leased from third parties pursuant to sale and leaseback agreements. Beazer Homes USA was founded in 1993 and is headquartered in Atlanta, Georgia.


CAVALIER HOMES INC (CAV)

Cavalier Homes, Inc., through its subsidiaries, engages in producing, selling, financing, and insuring manufactured housing. It primarily designs, manufactures, and sells homes in the United States. The company offers approximately 590 different models of manufactured homes, including modular homes, and single-section and multisection models. Cavalier Homes also offers retail installment sale financing and related insurance products for manufactured homes. Cavalier Homes sells its products and services to individuals through its dealer network. The company was founded in 1984 by Jerry F. Wilson. Cavalier Homes is based in Addison, Alabama.


CHICAGO BRIDGE & IRON COMPANY N.V (CBI)

Chicago Bridge & Iron Company N.V. operates as an engineering, procurement, and construction company. It offers conceptual design, engineering, procurement, fabrication, field erection, mechanical installation, and commissioning services. The company's projects include hydrocarbon processing plants, liquefied natural gas terminals and peak shaving plants, offshore structures, pipelines, bulk liquid terminals, water storage and treatment facilities, and other steel structures and associated systems. Chicago Bridge & Iron Company also provides repair and maintenance services, including turnarounds for petroleum refining and petrochemical plants. It serves customers in various industries, including oil and gas, petrochemical and chemical, power, water and wastewater, and metals and mining. The company was founded in 1889 by Horace E. Horton and is based in Hoofddorp, the Netherlands.


CHAMPION ENTERPRISES INC (CHB)

Champion Enterprises, Inc. engages in the production and sale of factory-built homes. It produces a range of homes, including multisection, ranch-style homes, one-half story and two-story homes, single-section homes, cape cod style homes, and multifamily units, such as townhouses. The company primarily sells its homes through independent retailers and company-owned retail sales centers. As of January 1, 2005, it operated 29 manufacturing facilities in 14 states in the United States and 2 provinces in western Canada; and 60 retail locations in 15 states. The company was established in 1953 and is headquartered in Auburn Hills, Michigan.


CLEAN HARBORS INC (CLHB)

Clean Harbors, Inc. (CHI) engages in the provision of environmental services and operation of nonnuclear hazardous waste treatment facilities in North America. It offers technical, site, and industrial services. The company's technical services include collection, transport, treatment, and disposal of hazardous and nonhazardous wastes; and physical treatment, resource recovery, fuels blending, incineration, landfill disposal, wastewater treatment, lab chemical disposal, and explosives management services. It offers CleanPack services, which include the collection, identification, and categorization; specialized packaging; transportation; and disposal of laboratory chemicals and household hazardous wastes. CHI's site services include confined space entry for tank cleaning, site decontamination, remediation projects, selective demolition, spill cleanup, railcar cleaning, product recovery and transfer, scarifying and media-blasting, and vacuum services, as well as used oil and oil products recycling, and PCB management and disposal. Its industrial services include management of hazardous, nonhazardous, and wet and dry materials; chemical cleaning, hydro blasting, liquid/dry vacuuming, sodium bicarbonate blasting, line cleaning, boiler cleanouts, and steam cleaning of its customers' process equipment and systems; and video inspection, dewatering, and onsite material processing. As of December 31, 2004, CHI operated 48 hazardous waste management properties, which included 5 incineration locations; 9 commercial landfills; 7 wastewater treatment plants; 20 treatment, storage, and disposal facilities; and 7 facilities, which specialized in PCB management. Its principal customers include utility, chemical, petroleum, petrochemical, pharmaceutical, transportation and industrial firms, educational institutions, other environmental service companies, and government agencies. CHI was founded by Alan S. McKim in 1980 and is based in Braintree, Massachusetts.


CHINA NETCOM GROUP CORPORATION (HONG KONG) LIMITED (CN)

China Netcom Group Corporation (Hong Kong) Limited provides fixed-line telecommunications, broadband and other Internet-related services, and business and data communications services in China and the Asia-Pacific region. Its fixed-line telecommunications services include local telephone, domestic long distance, international long distance, value-added, and interconnection services. As of December 31, 2004, the company had approximately 80.4 million fixed-line customers. China Netcom's broadband and other Internet-related services include digital subscriber line, Ethernet technology-based local-area network, dial-up and dedicated Internet access, and other services. Its business and data communications services include digital data network, frame relay, asynchronous transfer mode, Internet Protocol-based virtual private network, and leased line services. The company also provides telecommunications services comprising international voice services, leased line, Internet access, managed data, and other telecommunications services to small and medium-sized enterprises, multinational business customers, Internet service providers, and telecommunications carriers. China Netcom markets its services through service representatives and account managers, direct and third-party sales outlets, telephone hotline, and its Web site to residential, small and medium-sized enterprises, and large businesses. China Netcom has a strategic alliance agreement with Telefonica Internacional, S.A. The company was established in October 1999 as Target Strong Limited and changed its name to China Netcom (Hong Kong) Corporation Limited in December 1999. Further, it changed its name to China Netcom Corporation (Hong Kong) Limited in 2000 and to China Netcom Group Corporation (Hong Kong) Limited in 2004. China Netcom is based in Beijing, China. China Netcom Group Corporation (Hong Kong) Limited is a subsidiary of China Network Communications Group Corporation.


CERADYNE INC (CRDN)

Ceradyne, Inc. engages in the development, manufacture, and marketing of advanced technical ceramic products and components for defense, industrial, automotive/diesel, and commercial applications. Its primary products include lightweight ceramic armor for soldiers and military helicopters; ceramic powders, including boron carbide, boron nitride, silicon nitride, and silicon carbide; functional and frictional coatings primarily for automotive and textile applications; ceramic diesel engine components; ceramic orthodontic brackets; ceramic-impregnated dispenser cathodes for microwave tubes, lasers, and cathode ray tubes; and ceramic industrial components for erosion and corrosion resistant applications. The company's customers include the U.S. government, prime government contractors, and industrial and commercial manufacturers. Ceradyne was founded in 1967 and based in Costa Mesa, California.


SALESFORCE.COM INC (CRM)

salesforce.com, inc. provides on-demand customer relationship management services. Its offers services to manage and share information regarding sales, customer service and support, and marketing operations worldwide. The sales force automation services enable salespeople to be productive by automating manual and repetitive tasks, and provides organized data about their current and prospective customers, as well as permits companies to establish a system and a process for recording, tracking, and sharing information about sales opportunities, sales forecasts, and closed business. The customer service and support automation services allow companies to interact with their existing customers in various areas, such as requests for repairs, advice about products and services, and complaints about faulty goods. The marketing automation services enable companies to manage marketing campaigns. The company offers its services through Enterprise Edition, Professional Edition, and Team Editions. It also offers wireless functionality, which enables access to a subset of a user's data through the RIM BlackBerry, pocket personal computer, and palm operating system-based wireless devices and WAP-enabled mobile phones. In addition, the company offers Personal Edition service, which includes a contact management database and other features that are useful to sales representatives and others; Customforce that enables customers to tailor the features of its services to meet their business requirements or create new on-demand applications; and sforce, a Web services-based API platform, enables customers and independent software vendors, to customize tables and page views within its service. Further, the company provides consulting and implementation services, and training. salesforce.com was co-founded by Marc Benioff, Parker Harris, and David Moellenhoff in 1999. The company is based in San Francisco, California.


CARBO CERAMICS INC (CRR)

CARBO Ceramics, Inc. engages in the production and supply of ceramic proppant for use in the hydraulic fracturing of natural gas and oil wells. The company, through its subsidiary, Pinnacle Technologies, Inc., provides fracture diagnostic services and hydraulic fracture simulation software. It manufactures four ceramic proppants under the names CARBOHSP, CARBOPROP, CARBOLITE, and CARBOECONOPROP. CARBOHSP and CARBOPROP are designed primarily for use in deep gas wells. CARBOLITE and CARBOECONOPROP are designed for use in moderate depth and shallower oil wells. Its products are marketed worldwide through oilfield service companies that provide hydraulic fracturing services for companies involved in natural gas and oil exploration and production. CARBO Ceramics was formed in 1987 and is headquartered in Irving, Texas.


CENTEX CORPORATION (CTX)

Centex Corporation provides home building, financial services, and construction services. Its Home Building segment involves in the purchase and development of land or lots, as well as in the construction and sale of single family homes, and land or lots. The company's Financial Services segment provides home financing, subprime home equity lending, and the sale of title insurance and other various insurance coverages. These activities include mortgage origination, servicing, and other related services for homes sold by the company and others. Centex's Construction Services segment constructs buildings and facilities for both private and government interests, including educational institutions, hospitals, military housing, correctional institutions, airport facilities, office buildings, hotels and resorts, and sports facilities. Further, the company engages in home services operations and investment real estate operations. Centex primarily operates in the United States and the United Kingdom. The company was founded in 1950 and is based in Dallas, Texas.


CONTINENTAL MATERIALS CORPORATION (CUO)

Continental Materials Corporation, through its subsidiaries, operates in the construction materials, and heating and air conditioning industries. The construction materials business includes the provision of ready mix concrete, construction aggregates and building supplies; fabrication and sale of steel and wood doors, and other types of construction materials, including steel reinforcement bars. The company offers these products to general and sub-contractors, government entities, and individuals. Its heating and air conditioning business includes the production and sale of gas-fired wall furnaces and console heaters, evaporative coolers, and fan coils. The company markets these products in the United States through plumbing, heating, and air conditioning wholesale distributors. Continental Materials was incorporated in 1954 and is headquartered in Chicago, Illinois.


CASELLA WASTE SYSTEMS INC (CWST)

Casella Waste Systems, Inc., a solid waste services company, provides collection, transfer, disposal, and recycling services to residential, industrial, and commercial customers, primarily in the northeastern United States. It markets recyclable metals, aluminum, plastics, paper, and corrugated cardboard, which have been processed at its facilities, as well as recyclables purchased from third parties. The company also generates and sells electricity under a long-term contract at a waste-to-energy facility, Maine Energy Recovery Company LP. As of June 15, 2005, Casella Waste Systems owned and/or operated 8 Subtitle D landfills; 2 landfills permitted to accept construction and demolition materials; 37 solid waste collection operations; 34 transfer stations; 38 recycling facilities; 1 waste-to-energy facility; and a 50% interest in a joint venture that manufactures, markets, and sells cellulose insulation made from recycled fiber. The company markets its commercial, industrial, and municipal services through its sales representatives. Casella Waste Systems was founded in 1975 and is based in Rutland, Vermont.


CEMEX S.A.B. DE C.V (CX)

CEMEX, S.A. de C.V., a holding company, engages in the production, distribution, marketing, and sale of cement, ready-mix concrete, aggregates, and clinker worldwide. The company has operations in North, Central, and South America; Europe; the Caribbean; Asia; and Africa. It delivers its products through direct sales and distribution channels to the residential, industrial, commercial, and public sectors. CEMEX was founded in 1906 and is based in Garza Garcia, Mexico.


DELTIC TIMBER CORPORATION (DEL)

Deltic Timber Corporation engages in growing and harvesting timber, as well as manufacturing and marketing lumber in the United States. It owns approximately 436,000 acres of timberland that consists of pine forest, pine plantation, and hardwood forest primarily in Arkansas and north Louisiana. The company operates sawmills at Ola in central Arkansas and at Waldo in south Arkansas, which produce dimension lumber, boards, timbers, and decking, as well as secondary manufacturing products, such as finger-jointed studs that are used in residential construction, roof trusses, and laminated beams. Deltic Timber sells its lumber primarily to wholesale distributors, lumber treaters, and truss manufacturers in the south and midwest. The company also engages in real estate development in central Arkansas. Its real estate projects include Chenal Valley, Chenal Downs, and Red Oak Ridge in Arkansas. The company sells its residential lots to builders or individuals, and commercial sites. Deltic Timber has a joint venture, Del-Tin Fiber L.L.C., with Temple-Inland Forest Products Corporation for manufacturing and marketing medium density fiberboard. The company is headquartered in El Dorado, Arkansas.


DEVCON INTERNATIONAL CORP (DEVC)

Devcon International Corp. provides heavy-construction and support services in the eastern Caribbean islands and the State of Florida. The company has three divisions: Materials, Construction, and Security Services. Materials division produces and distributes ready-mix concrete, crushed stone, concrete block, and asphalt and distribute bagged cement. Construction division performs earthmoving, excavating, and filling operations; builds golf courses, roads, and utility infrastructures; dredges waterways; and constructs deep-water piers and marinas in the Caribbean. Security Services division provides electronic security services and related products, including intrusion and fire detection services, as well as access control systems and closed circuit television systems to residential homes, financial institutions, industrial and commercial businesses, warehouses, facilities of government departments, and health care and educational facilities. Devcon International also has an 80% owned joint venture, DEVMAT, which builds, owns, and operates fresh water, waste water treatment, and power systems. The company was founded in 1950. It was formerly known as Zinke-Smith, Inc. and changed its name to Devcon International Corp. in 1971. Devcon International is headquartered in Deerfield Beach, Florida.


D.R. HORTON INC (DHI)

D.R. Horton, Inc., along with its subsidiaries, engages in the construction and sale of single-family homes in the United States. The company operates in two segments, Homebuilding and Financial Services. The Homebuilding segment acquires and develops land for residential purposes; and constructs and sells residential homes. This segment builds traditional single-family detached homes, as well as attached homes, such as town homes, duplexes, triplexes, and condominiums; and sells land and lots. The Financial Services segment originates and sells mortgages to purchasers of its homes; and loans to third-party lenders, who directly originate the mortgage loans. It also provides title insurance policies, examination, and closing services to purchasers. The company markets and sells homes through commissioned employees and independent real estate brokers. D.R. Horton was founded in 1978 and is based in Fort Worth, Texas.


DOMINION HOMES INC (DHOM)

Dominion Homes, Inc. offers single-family homes in central Ohio, as well as in Louisville and Lexington, Kentucky. It provides four series of homes: Independence, Metropolitan, Celebration, and Tradition. The Independence series, a neotraditional housing concept, targets entry-level home buyers. This series consist of detached, single-family homes located in communities with relatively narrow streets; garage access through alleys in the rear; and the look, feel, and privacy of homes in older, traditional neighborhoods. The Metropolitan series targets the young, single customer. It offers four attached two-story plan designs in maintenance-free communities. The Celebration series targets entry-level and first-time move-up home buyers. The Tradition series, with styles ranging from contemporary to traditional designs, targets move-up home buyers. These home designs incorporate various semicustom features and offer various options. The company also offers loan application counseling, loan processing and negotiation, and the placement of mortgages with third party mortgage lenders. As of December 31, 2004, Dominion had 72 model homes. It sells its homes principally through the use of onsite, as well as through its Dominion HomeStores. Dominion Homes was formed in 1952. The company was formerly known as Borror Corporation and changed its name to Dominion Homes, Inc. in 1997. Dominion Homes is headquartered in Dublin, Ohio.


DANAHER CORPORATION (DHR)

Danaher Corporation engages in the design, manufacture, and marketing of industrial and consumer products. It operates in three segments: Professional Instrumentation, Industrial Technologies, and Tools and Components. The Professional Instrumentation segment produces and sells electronic test tools and calibration equipment; water quality instrumentation and consumables, and ultraviolet disinfection systems; retail/commercial petroleum products and services, including underground storage tank leak detection systems; critical care diagnostic instruments; and a range of products used by dental professionals. The Industrial Technologies segment offers products and subsystems that are used by original equipment manufacturers into various end-products and systems, as well as by customers and systems integrators into production and packaging lines. It offers product identification equipment and consumables; motion, position, speed, temperature, and level instruments, as well as sensing devices; power switches and controls; power protection products; liquid flow and quality measuring devices; safety devices; and electronic and mechanical counting and controlling devices. The Tools and Components segment produces and distributes general purpose and specialty mechanics' hand tools. Its products include toolboxes and storage devices; diesel engine retarders; wheel service equipment; drill chucks; custom-designed headed tools and components; and precision socket screws, fasteners, and miniature precision parts. The company was organized in 1969. It was formerly known as DMG, Inc. and changed its name to Diversified Mortgage Investors, Inc. in 1978. Further, the company changed its name to Danaher Corporation in 1984. Danaher is headquartered in Washington, D.C.


DREW INDUSTRIES INCORPORATED (DW)

Drew Industries Incorporated, through its wholly owned subsidiaries, supplies components for recreational vehicles (RV) and manufactured homes in the United States and Canada. It operates through two segments, recreational vehicle and leisure products segment (RV segment) and manufactured housing products segment (MH segment). The RV segment manufactures and markets primarily travel trailers and fifth wheels, including aluminum windows, screens, various doors, steel chassis, steel chassis parts, RV slide-out mechanisms and related power units, electric stabilizer jacks, as well as bath and shower units for manufactured and modular homes. The MH segment manufactures and markets various components for manufactured homes and, to a lesser extent, modular housing and office units, including vinyl and aluminum windows and screens, thermo-formed bath and shower units, steel chassis and steel chassis parts. It also manufactures specialty trailers for equipment hauling, boats, personal watercraft, and snowmobiles. As of December 31, 2004, the company's subsidiaries operated 50 plants in the United States and one in Canada. Drew Industries was incorporated in 1962 and is based in White Plains, New York.


DYCOM INDUSTRIES INC (DY)

Dycom Industries, Inc. provides contracting services to telecommunications providers in the United States. Its contracting services include engineering, construction, installation, and maintenance services. The company's telecommunications infrastructure services include engineering, placement, and maintenance of aerial, underground, and buried fiber-optic, coaxial and copper cable systems owned by local and long distance communications carriers and cable television multiple system operators. The company also provides similar services related to the installation of integrated voice, data, and video local and wide area networks within buildings. In addition, the company offers underground locating services to various utilities, and other construction and maintenance services to electric utilities and others. Dycom Industries, Inc. was founded in 1969 and is headquartered in Palm Beach Gardens, Florida.


AMERICAN ECOLOGY CORPORATION (ECOL)

American Ecology Corporation (AEC), through its subsidiaries, provides radioactive, hazardous, and industrial waste management services in the United States. The company's disposal facilities accept hazardous and low-level radioactive waste (LLRW), and naturally occurring and accelerator produced radioactive materials. It has hazardous waste treatment and disposal facilities in Beatty, Nevada; Grand View, Idaho; and Robstown, Texas, as well as LLRW disposal facility in Richland, Washington. The company also inspects, monitors, and performs corrective measures at its nonoperating disposal facilities. AEC provides services to commercial and government entities, such as nuclear power plants, medical and academic institutions, steel mills, refineries, and chemical production facilities. American Ecology Corporation was founded in 1983 and is headquartered in Boise, Idaho.


EMCOR GROUP INC (EME)

EMCOR Group, Inc. operates as a mechanical and electrical construction and facilities services company in the United States, Canada, the United Kingdom, and worldwide. The company designs, integrates, installs, starts up, operates, and maintains various mechanical and electrical systems, including heating, ventilation, air conditioning, refrigeration, and clean-room process ventilation systems; plumbing, process, and piping systems; systems for the generation and distribution of electrical power, including power cables, conduits, distribution panels, transformers, generators, uninterruptible power supply systems, and related switch gear and controls; lighting systems, including fixtures and controls; low-voltage systems, including fire alarm, security, communications, and process control systems; and voice and data communications systems, including fiber-optic and low-voltage copper cabling. EMCOR Group also designs and constructs customers' energy-related projects, as well as provides plant staffing for certain of these projects. Its facilities services comprise maintenance and service of mechanical and electrical systems, site-based operations and maintenance, mobile maintenance and services, facilities management, remote monitoring, installation and support for building systems, technical consulting and diagnostic services, small modification and retrofit projects, and program development and management for energy systems. The company provides services to a range of commercial, industrial, utility, and institutional customers. EMCOR Group is headquartered in Norwalk, Connecticut.


EATON VANCE LIMITED DURATION INCOME FUND (EVV)

Eaton Vance Limited Duration Income Fund operates as a diversified, closed-end management investment company. It invests primarily in mortgage-backed securities. The fund's investment portfolio includes investments in companies operating in various sectors comprising consumer discretionary, consumer staples, energy, financials, healthcare, information technology, industrials, materials, telecom services, and utilities. Eaton Vance Management serves as the investment adviser of the fund. The fund was founded in 2003 and is based in Boston, Massachusetts.


COMFORT SYSTEMS USA INC (FIX)

Comfort Systems USA, Inc. provides heating, ventilation, and air conditioning (HVAC) installation; maintenance; repair; and replacement services within the mechanical services industry in the United States. The company also offers specialized applications, such as building automation control systems, fire protection, process cooling, electronic monitoring, and process piping. In addition, it provides related activities, such as electrical service and plumbing. Comfort Systems offers its services to office buildings, retail centers, apartment complexes, and manufacturing plants, as well as to healthcare, education, and government facilities primarily in the commercial, industrial, and institutional HVAC markets. Its customers include building owners and developers, property managers, general contractors, architects, and consulting engineers. Comfort Systems was founded in 1917 and is headquartered in Houston, Texas.


FLORIDA ROCK INDUSTRIES INC (FRK)

Florida Rock Industries, Inc., a construction materials company, together with its subsidiaries, produces construction aggregates, ready mixed concrete, and concrete block. It operates in three segments: Construction Aggregates, Concrete Products, and Cement and Calcium Products. The Construction Aggregates segment engages in mining, processing, distribution and sale of sand, gravel and crushed stone. The Concrete Products segment engages in the production and sale of ready mix concrete, concrete block, and prestressed and precast concrete, as well as other building materials. The Cement and Calcium Products segment offers portland and masonry cement; calcium products to the animal feed industries; and imports cement and slag. Florida Rock has operations in Florida, Virginia, Georgia, Maryland, Washington D.C., Tennessee, Alabama, North Carolina, and Delaware. The company was founded in 1945 and is headquartered in Jacksonville, Florida.


GRIFFON CORPORATION (GFF)

Griffon Corporation operates as a diversified manufacturing company. It operates in four segments: Garage Doors, Installation Services, Specialty Plastic Films, and Electronic Information and Communication Systems. The Garage Doors segment engages in the design, manufacture, and sale of residential garage doors and commercial sectional doors for use in the residential housing and commercial building markets, as well as to independent professional installing dealers and home center retail chains in the United States and Canada. It distributes its building products through various distribution channels, including installing dealers, retailers, and wholesalers. The Installation Services segment engages in the sale, installation, and service of garage doors, garage door openers, manufactured fireplaces, floor coverings, cabinetry, and related building products for the residential housing market. The Specialty Plastic Films segment engages in the development, production, and sale of plastic films and film laminates, gauge embossed and printed films, elastomeric films, and laminates of film and nonwoven fabrics for use in infant diapers, adult incontinence products, feminine hygiene products, and disposable surgical and patient care products. Its products are sold through the direct sales force to multinational consumer and medical products companies in the United States, Europe, Canada, South America, and Asia Pacific. The Electronic Information and Communication Systems segment provides logistical support for communications, radar, information, command and control systems, and integrated circuits for defense aerospace, civil, industrial, and commercial applications. Griffon was incorporated in 1959 and is headquartered in Jericho, New York.


GOLDFIELD CORPORATION (GV)

The Goldfield Corporation provides electrical construction and maintenance services in the energy infrastructure industry in the southeastern and mid-Atlantic region of the United States. Its principal lines of business are electrical construction and real estate development. It constructs transmission lines, distribution systems and substations, and other electrical installation services for utility systems, and industrial and specialty projects. The company also installs fiber optic cable for fiber optic cable manufacturers, telecommunication companies, and electric utilities. It also engages in the real estate development of waterfront condominium projects on the east coast of Central Florida. The company was incorporated in 1906 and is based in Melbourne, Florida.


GRANITE CONSTRUCTION INCORPORATED (GVA)

Granite Construction Incorporated operates as a civil construction contractor in the United States. The company serves public and private sector clients. In the public sector, it primarily focuses on infrastructure projects, including the construction of roads, highways, bridges, dams, tunnels, canals, mass transit facilities, and airport runways. In the private sector, it performs site preparation and infrastructure services for buildings, plants, subdivisions, and other facilities. The company has offices in Alaska, Arizona, California, Florida, Georgia, Minnesota, Nevada, New York, Oregon, Texas, Utah, and Washington. GCI was founded in 1922 and is based in Watsonville, California.


HORIZON OFFSHORE INC (HOFF)

Horizon Offshore, Inc., together with its subsidiaries, provides marine construction services for the offshore oil and gas and energy industries. The company's services include lying, burying, or repairing marine pipelines; providing hook-up and commissioning services; installing offshore production platforms and other structures; and disassembling and salvaging production platforms, and other structures. Horizon Offshore, Inc. offers its services primarily to offshore oil and gas companies and energy companies in the U.S. Gulf of Mexico, Latin America, southeast Asia/Mediterranean, and West Africa. As of December 31, 2006, its fleet consisted of nine vessels. The company was founded in 1995 and is headquartered in Houston, Texas.


HOVNANIAN ENTERPRISES INC (HOV)

Hovnanian Enterprises, Inc. engages in building residential homes in the United States. The company designs, constructs, markets, and sells single-family detached homes, attached townhomes and condominiums, mid-rise and high-rise condominiums, urban infill, and adult homes. It primarily markets and builds homes for first-time buyers, first-time and second-time move-up buyers, luxury buyers, adult buyers, and empty nesters. The company offers homes for sale in 275 communities in 24 markets in 13 states throughout the United States. In addition, it provides financial services, such as mortgage loans and title services to its homebuilding customers. Hovnanian was founded by Kevork Hovnanian in 1959. The company is headquartered in Red Bank, New Jersey.


EMPRESAS ICA SOC CONTRLADORA (ICA)

Empresas ICA S.A. de C.V. operates as an engineering, procurement and construction company that provides construction services to both public and private sector clients. The company engages in various construction and related activities, involving the construction of infrastructure facilities, as well as industrial, urban, and housing construction. In addition, the company also engages in the development and marketing of real estate; construction, maintenance, and operation of airports, highways, bridges, and tunnels; and management and operation of water supply systems and solid waste disposal systems under concessions granted by governmental authorities. Empresas ICA has operations in Mexico, Spain, the United States, and other Latin American countries. The company was founded in 1947 and is based in Mexico City, Mexico.


INDUSTRIAL SERVICES OF AMERICA INC (IDSA)

Industrial Services of America, Inc., a logistic management services company, offers waste and recycling management services to commercial, industrial, and logistic customers in the United States, Canada, Puerto Rico, and Mexico. The company operates in three segments: ISA Recycling, Computerized Waste Systems (CWS), and Waste Equipment Sales and Service (WESSCO). ISA Recycling segment provides products and services related to ferrous, nonferrous, and fiber recycling. It purchases and sells ferrous and nonferrous materials, fiber scrap, cardboard, and paper. CWS segment provides waste disposal services, including contract negotiations with service providers, centralized billing, invoice auditing, and centralized dispatching. WESSCO segment sells, leases, and services waste handling and recycling equipment. The company was incorporated in 1953 under the name Alson Manufacturing, Inc. and subsequently changed its name to Industrial Services of America, Inc. Industrial Services of America is headquartered in Louisville, Kentucky.


INDIA GLOBALIZATION CAPITAL INC (IGC)

India Globalization Capital, Inc. does not have significant operations. It intends to acquire one or more businesses in an unspecified industry in India through a merger, capital stock exchange, asset acquisition, or other similar business combination. The company was founded in 2005 and is headquartered in Bethesda, Maryland.


JACOBS ENGINEERING GROUP INC (JEC)

Jacobs Engineering Group, Inc. provides technical, professional, and construction services to industrial, government, and commercial clients worldwide. The company offers project services, including engineering, design, architectural, and similar services to process plants, buildings, infrastructure projects, technology and manufacturing facilities, pulp and paper plants, and other facilities; engineering, planning, scheduling, procurement, estimating, project accounting, and quality and safety services; and construction management services. Its construction services include traditional field construction services and environmental remedial construction services to private and public sector clients. The company's operations and maintenance services comprise engineering and technical support services, and program management services; and management and technical support services in aerospace and defense areas. These services also include facilities management and maintenance services, utilities operations and maintenance services, property management and disposition service, and construction support services; and plant maintenance services. The company's process, scientific, and systems consulting services include performing pricing studies, market analyses, and financial projections; gasoline reformulation modeling; analyzing and evaluating layout and mechanical designs for processing plants; analyzing automation and control systems; analyzing, designing, and executing biocontainment strategies; developing and performing process protocols; providing consultation on railway and airport expansion projects; and performing geological and metallurgical studies. It serves oil and gas and refining, federal programs, chemicals and polymers, pharmaceuticals and biotechnology, infrastructure, buildings, technology and manufacturing, and pulp and paper industries. The company was founded in 1957 and is based in Pasadena, California.


KB HOME (KBH)

KB Home operates as a homebuilder primarily in the United States and France. It engages in the acquisition and development of land primarily for residential purposes; and offers various homes that are designed to appeal to a range of buyers, including first-time, move-up homebuyers, luxury, and active adult homebuyers. In the United States, the company sells homes in Arizona, California, Colorado, Florida, Georgia, Illinois, Indiana, Nevada, New Mexico, North Carolina, South Carolina, and Texas. In France, the company, through its subsidiary, Kaufman & Broad S.A., develops commercial and residential projects, such as condominium complexes. In addition, its wholly owned subsidiary, KB Home Mortgage Company (KBHMC), originates, processes, and sells mortgages to third-party investors. The company, through KBHMC, provides mortgage banking services to its domestic homebuyers. The company delivered approximately 31,646 homes in the United States and France, as of February 14, 2005. KB Home has a joint venture with The Shaw Group, Inc. to build homes in Louisiana. The company was founded in 1957 and is headquartered in Los Angeles, California.


LAYNE CHRISTENSEN COMPANY (LAYN)

Layne Christensen Company provides various services and products to the water resources, mineral exploration, geoconstruction, and energy markets. It operates in four divisions: Water Resources, Mineral Exploration, Geoconstruction, and Energy. The Water Resources division provides water-related services and products, including hydrological studies, site selection, well design, drilling and well development, pump installation, and repair and maintenance. It also engages in the design and construction of water treatment facilities; and the manufacture and sale of products to treat volatile organics and other contaminants, such as nitrates, iron, manganese, arsenic, radium, and radon in groundwater. In addition, this division offers environmental services to assess and monitor groundwater contaminants. The Mineral Exploration division provides drilling services for the mineral exploration industry. Its drilling activities include all phases of core drilling, diamond, reverse circulation, dual tube, hammer, and rotary air-blast methods. As of January 31, 2005, the company also operated 134 gross producing wells. As of February 1, 2005, it had proved reserves of 26.6 billion cubic feet of natural gas. The Geoconstruction division offers various services comprising grouting, vibratory ground improvement, drilled micropiles, stone columns, anchors, and tiebacks for soil stability. It also manufactures high-pressure pumping equipment used in grouting operations and geotechnical drilling rigs used for directional drilling. Energy division focuses on exploration and production of coalbed methane properties in the midcontinent region of the United States. Layne Christensen's customers include municipalities; industrial, mining, and oil and gas companies; and consulting and engineering firms located principally in the United States, Canada, Mexico, Australia, Africa, and South America. The company was incorporated in 1981 and is headquartered in Mission Woods, Kansas.


LENNAR CORPORATION (LEN)

Lennar Corporation engages in homebuilding and financial services business in the United States. The homebuilding operations include the sale and construction of single-family attached and detached homes, as well as the purchase, development, and sale of residential land directly, and through unconsolidated entities. Lennar offers financial services, such as mortgage financing, title insurance, closing services, and insurance agency services for both buyers of the company's homes and others. It also provides Internet and cable television services to residents of the company's communities and others. Lennar offers its services primarily in Arizona, California, Colorado, Florida, Illinois, Maryland, Minnesota, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oregon, Pennsylvania, South Carolina, Texas, Virginia, Washington, and Wisconsin. The company was founded in 1954 and is headquartered in Miami, Florida.


LOUISIANA-PACIFIC CORPORATION (LPX)

Louisiana-Pacific Corporation engages in the manufacture and distribution of building products primarily in the United States and Canada. The company operates in three segments: Oriented Strand Board (OSB), Siding, and Engineered Wood Products (EWP). OSB segment manufactures and distributes OSB structural panel products. Siding segment engages in the production and marketing of siding products and related accessories; hardboard siding and accessory products; and vinyl siding products and accessories. EWP segment manufactures and distributes laminated veneer lumber, I-joists, plywood, and other related products. The company's products are used primarily in new home construction, repair and remodeling, and manufactured housing. Its customers principally include retail home centers, builders, manufactured housing producers, distributors, and wholesalers. Louisiana-Pacific Corporation was founded in 1972 and is headquartered in Nashville, Tennessee.


M.D.C. HOLDINGS INC (MDC)

M.D.C. Holdings, Inc., through its subsidiaries, builds homes under the name Richmond American Homes in the United States. The company builds and sells primarily single-family detached homes, and also townhomes in Virginia and Maryland. Its subsidiary, HomeAmerican Mortgage Corporation, originates or brokers mortgage loans primarily for the company's homebuyers. M.D.C. Holdings also offers third party insurance products to homebuyers, through its subsidiary, American Home Insurance Agency, Inc. In addition, the company provides title agency services through American Home Title and Escrow Company in Virginia, Maryland, Colorado, Florida, Texas, and Delaware. The company, formerly known as Mizel Development Corporation, was founded in 1972 and is headquartered in Denver, Colorado.


MASSEY ENERGY COMPANY (MEE)

Massey Energy Company engages in the production, processing, and sale of low sulfur bituminous coal of steam and metallurgical grades through its processing and shipping centers called resource groups. These resource groups or mining complexes blend, process, and ship coal that is produced from one or more mines. The company's steam coal is primarily purchased by utilities and industrial clients as fuel for power plants. Its metallurgical coal is used primarily to make coke for use in the manufacture of steel. The company also operates material handling facilities and a synfuel production plant. This plant converts coal products to synthetic fuel. Its customer base includes various electric utilities, steel manufacturers, industrial customers, and energy traders and brokers. As of December 31, 2004, Massey Energy operated 34 underground mines and 15 surface mines in West Virginia, Kentucky, and Virginia. In addition, the company holds interests in operations that produce, gather, and market natural gas from shallow reservoirs in the Appalachian Basin. As of the above date, it owned and operated approximately 156 wells, 184 miles of gathering line, and various small compression facilities in Appalachian Basin. Massey Energy distributes its products through freight and terminal agreements with various providers, including railroads, barge lines, steamship lines, bulk motor carriers and terminal facilities. The company was founded in 1912. It was formerly known as A.T. Massey Coal Company, Inc. and renamed as Massey Energy Company in 2000. Massey Energy is headquartered in Richmond, Virginia.


M/I HOMES INC (MHO)

M/I Homes, Inc. and its subsidiaries engage in the construction and sale of single-family residential property in the United States. The company designs, sells, and builds single-family homes on finished lots in Columbus and Cincinnati, Ohio; Tampa, Orlando, and West Palm Beach, Florida; Charlotte and Raleigh, North Carolina; Indianapolis, Indiana; and the Virginia and Maryland suburbs of Washington, D.C. It also purchases undeveloped land to develop into finished lots for future construction of single-family homes and for sale to others. As of December 31, 2004, the company owned 15,839 lots, including interest in lots held by joint ventures and limited liability companies, as well as controlled 13,893 lots. It markets its homes under M/I Homes and Showcase Homes trade names. M/I Homes was incorporated in 1973. The company was formerly known as M/I Schottenstein Homes, Inc. and changed its name to M/I Homes, Inc. in January 2004. M/I Homes is based in Columbus, Ohio.


MARTIN MARIETTA MATERIALS INC (MLM)

Martin Marietta Materials, Inc. produces aggregates for the construction industry primarily in the United States. The company operates in two segments, Aggregates and Specialty Products. The Aggregates segment processes and sells granite, limestone, sand, gravel, and other aggregates products to the public infrastructure, commercial, and residential construction industries. It sells its aggregates and asphalt products, and ready mixed concrete through a network of quarries, distribution facilities, and plants in North America. The Specialty Products segment includes the Magnesia Specialties business and the Structural Composite Products business. It manufactures and markets magnesia-based chemicals products used in industrial, agricultural, and environmental applications, and dolomitic lime products primarily sold to the steel industry. Martin Marietta Materials was formed in 1993 and is headquartered in Raleigh, North Carolina.


MODTECH HOLDINGS INC (MODT)

Modtech Holdings, Inc. engages in the design, manufacture, marketing, and installation of classroom and other custom modular projects in the United States. It primarily provides modular relocatable classrooms, and commercial and light industrial modular buildings. The company also designs and builds modular, portable buildings to customer specifications for various uses, including governmental, healthcare, educational, airport, and correctional facilities; office and retail space; daycare centers; libraries; churches; construction trailers; golf clubhouses; police stations; convenience stores; fast food restaurants; and sales offices. The modular buildings serve as temporary, semipermanent, and permanent facilities and could function as free-standing buildings or additions to existing structures. Modtech Holdings sells its products through an internal sales group, leasing companies, and a dealer network. The company was founded in 1982 and is based in Perris, California.


MERITAGE CORPORATION (MTH)

Meritage Homes Corporation engages in designing and building single-family homes in Texas, Arizona, California, Nevada, Colorado, and Florida. It provides a broad range of first-time, move-up, luxury, and Active Adult homes. The company was formerly known as Meritage Corporation and changed its name to Meritage Homes Corporation in September 2004. Meritage Homes Corporation is based in Scottsdale, Arizona.


MATRIX SERVICE COMPANY (MTRX)

Matrix Service Company and its subsidiaries provide construction, and repair and maintenance services in the United States and Canada. The company's Construction Services segment provide turnkey and specialty construction services, including civil/structural, mechanical, piping, electrical and instrumentation, millwrighting, steel fabrication and erection, heavy hauling and rigging, and boiler work, as well as engineering, fabrication, and construction of aboveground storage tanks. Its Repair and Maintenance Services segment provide plant maintenance, plant turnaround services, plant outages, industrial cleaning, and aboveground storage tank repair/maintenance. Matrix Service Company offers its services to downstream petroleum and power industries, as well as to liquefied natural gas, wastewater, food and beverage, and pulp and paper industries. The company was incorporated in 1989 and is headquartered in Tulsa, Oklahoma.


MASTEC INC (MTZ)

MasTec, Inc. provides various services for the providers of telecommunications, broadband, energy services, traffic control, and homeland security systems in North America. It provides telecommunication customers with networks that carry voice, video, data, and Internet services to their end users. The company assists broadband companies, including cable television and satellite companies, to design, build, install, maintain, and upgrade the systems that bring cable television, satellite services, digital services, high-speed Internet access, and telephony to homes. MasTec assists electric, gas, and pipeline companies to design, build, install, maintain, and upgrade overhead and underground electrical distribution systems, transmission systems, substations, wind farms, switchyards, and natural gas pipelines. The company enables departments of transportation and local municipalities to design, build, install, maintain, and upgrade traffic control systems, including video surveillance systems and cameras, remote-controlled variable message signs, radar detection devices, traffic signal systems, and count stations. The company is headquartered in Coral Gables, Florida.


MEADOW VALLEY CORPORATION (MVCO)

Meadow Valley Corporation, through its subsidiaries, engages in the provision of construction services and supply of construction materials in the United States. It operates through two segments, Construction Services and Construction Materials. The Construction Services segment constructs bridges and overpasses, channels, roadways, highways, and airport runways. It provides construction services to various public and private customers primarily in the western states of Arizona, Nevada, and Utah. The Construction Materials segment manufactures and distributes ready mix concrete, sand, and gravel products in Las Vegas, Nevada; and Phoenix, Arizona markets. Its customers include concrete subcontractors, prime contractors, homebuilders, commercial and industrial property developers, pool builders, and homeowners. Meadow was organized in 1994 and is headquartered in Phoenix, Arizona.


MASISA SA ADS (MYS)

Masisa S.A., through its subsidiaries, produces particle boards, medium-density fiberboards (MDF), and oriented strand boards in Latin America. It also produces and sells finger-joint moldings, MDF moldings, solid wood interior rail, and stile doors in the United States. The company offers solid pine wood interior rail and stile doors, sawn lumber, and sawn and pulp logs. Its other products include wood shavings, wood chips, sawdust, door parts, fiberboard doors, and pine veneer wood plies. The company distributes its products through independent distributors to the construction and furniture manufacturing industries. Masisa markets its products in the United States, Chile, Mexico, Brazil, Venezuela, and Argentina. The company is headquartered in Santiago, Chile.


NCI BUILDING SYSTEMS INC (NCS)

NCI Building Systems, Inc. engages in the manufacture and marketing of metal products and services for the nonresidential construction industry in North America. The company operates in three segments: Metal Components, Engineered Building Segments, and Metal Coil Coating. The Metal Components segment designs, manufactures, sells, and distributes a range of metal component products, including preformed metal roof and wall systems, secondary structural members, flashings and accessories, roll-up and sectional doors, and interior partition systems. It sells its products to small, medium, and large contractors; specialty roofers; regional fabricators; regional engineered building fabricators; and end users. The company's Engineered Building Systems segment designs, manufactures, and delivers engineered building systems, self-storage building systems, and metal home framing systems for commercial, industrial, agricultural, governmental, community, and residential uses. The Metal Coil Coating segment provides products and services, including cleaning, treatment, and painting of various flat-rolled metal coil substrates, as well as the slitting/embossing of painted coils. It sells its products principally to manufacturers of painted steel products and steel mills. NCI Building Systems was founded in 1984 and is based in Houston, Texas.


NOBILITY HOMES INC (NOBH)

Nobility Homes, Inc. engages in the design, manufacture, and sale of a line of manufactured homes in Florida. It sells its homes through a network of its own retail sales centers, as well as on a wholesale basis to independent manufactured home retail dealers and manufactured home communities. These homes are sold under the names Kingswood, Richwood, Springwood, Springwood Special, Tropic Isle Special, Regency Manor Special, and Special Edition. Nobility Homes was incorporated in 1967 and is headquartered in Ocala, Florida.


NVR INC (NVR)

NVR, Inc. operates as a homebuilding and mortgage banking company in the United States. The company constructs and sells single-family detached homes, townhomes, and condominium buildings under three trade names: Ryan Homes, NVHomes, and Fox Ridge Homes. The Ryan Homes product is built in 18 metropolitan areas located in Maryland, Virginia, West Virginia, Pennsylvania, New York, North Carolina, South Carolina, Ohio, New Jersey, and Delaware. The Fox Ridge Homes product is built in the Nashville, Tennessee metropolitan area. The NVHomes product is built in the Washington, D.C.; Baltimore, Maryland; and Philadelphia, Pennsylvania metropolitan areas. The Ryan Homes and Fox Ridge Homes products are marketed primarily to first-time homeowners and first-time move-up buyers. The NVHomes product is marketed primarily to move-up and upscale buyers. The company, through its wholly owned subsidiary, NVR Mortgage Finance, Inc., provides mortgage-related services to its homebuilding customers in 11 states. Its mortgage banking operations also include separate subsidiaries that broker title insurance and perform title searches in connection with mortgage loans. NVR, Inc. was founded in 1979 and is headquartered in McLean, Virginia.


ORLEANS HOMEBUILDERS INC (OHB)

Orleans Homebuilders, Inc., through its subsidiaries, engages in the development, building, and marketing of single-family homes, townhouses, and condominiums. It develops land primarily for its own use and for other builders. The company also provides mortgage brokerage services to its customers. Orleans Homebuilders serves various customers, including luxury, move-up, empty nester, and active adult, as well as first time homebuyers. The company operates in southeastern Pennsylvania; central and southern New Jersey; Charlotte, Raleigh, and Greensboro, North Carolina; Richmond and Tidewater, Virginia; Orlando, Palm Coast, and Palm Bay, Florida; Orange County, New York; and Chicago, Illinois. As of September 30, 2005, the company served in 85 communities, as well as owned or controlled approximately 18,000 building lots. The company, formerly known as FPA Corporation, was founded in 1918 by Alfred P. Orleans. Orleans Homebuilders is headquartered in Bensalem, Pennsylvania.


PLUM CREEK TIMBER COMPANY INC (PCL)

Plum Creek Timber Company, Inc. operates as a real estate investment trust that owns and manages timber lands in the United States. The company engages in the sale and management of timberlands, and the sale of nonstrategic timberlands. It also produces a line of softwood lumber products, including common and select boards, studs, edge-glued boards, and finger-jointed studs. These products are targeted to domestic lumber retailers, such as retail home centers, for use in repair and remodeling projects. These products are also sold to stocking distributors for use in home construction. In addition, the company engages in the natural resource businesses that focus on opportunities relating to mineral extraction, natural gas production, and communication and transportation rights of way. As of December 31, 2004, the company owned and managed approximately 7.8 million acres of timberlands in the northwest, southern, and northeast United States, as well as owned and operated 10 wood product conversion facilities in the northwest United States. Plum Creek was formed in 1989 and is headquartered in Seattle, Washington.


PERINI CORPORATION (PCR)

Perini Corporation and its subsidiaries provide general contracting, construction management, and design-build services to private clients and public agencies worldwide. The company offers general contracting, preconstruction planning, and project management services, including the planning and scheduling of the manpower, equipment, materials, and subcontractors required for a project. It also offers self-performed construction services, including site work, concrete forming, and placement and steel erection. Perini Corporation operates through three segments: Building, Civil, and Management Services. The Building segment focuses on projects in the hospitality and gaming, sports and entertainment, educational, transportation, and healthcare markets. The Civil segment engages in new public works construction and the repair, replacement, and reconstruction of infrastructure, primarily in the metropolitan New York and Boston markets. Its civil contracting services include construction and rehabilitation of highways, bridges, light rail transit systems, subways, airports, and wastewater treatment facilities. The Management Services segment provides various construction, design-build, and maintenance services to the United States military and government agencies, as well as power producers, surety companies, and multinational corporations. Perini Corporation was founded in 1894 and is headquartered in Framingham, Massachusetts.


PERMA-FIX ENVIRONMENTAL SERVICES INC (PESI)

Perma-Fix Environmental Services, Inc., through its subsidiaries, operates as a waste management company in the United States. The company operates in three segments: Industrial Waste Management Services (IWMS), Nuclear Waste Management Services (NWMS), and Consulting Engineering Services (CES). The IWMS segment engages in onsite and off-site treatment, storage, disposal, and processing of various by-products and industrial, hazardous, and nonhazardous wastes, as well as provides emergency response, vacuum services, and marine and industrial maintenance services. The NWMS segment provides treatment, storage, processing, and disposal services, including research, development, and onsite and off-site waste remediation of mixed waste, which consists of hazardous and low-level radioactive materials; and low-level radioactive wastes. The CES segment provides various environmental-related consulting and engineering services to industry and government sectors. These services include oversight management of environmental restoration projects, air and soil sampling, compliance reporting, surface and subsurface water treatment design for removal of pollutants, and various compliance and training activities. The company's customers comprise research institutions, commercial companies, retail companies, public utilities, and governmental agencies nationwide. Perma-Fix Environmental Services was founded in 1990 and is headquartered in Gainesville, Florida.


PALM HARBOR HOMES INC (PHHM)

Palm Harbor Homes, Inc. engages in the manufacture and marketing of factory-built homes principally in the southeast, central, west, and midwest regions of the United States. The company manufactures single and multisection manufactured homes under various brand names, including Palm Harbor, Masterpiece, Keystone, CountryPlace, River Bend, and Windsor Homes. Its manufactured homes contain two to five bedrooms, a living room, family room, dining room, kitchen, and two or three bathrooms. Palm Harbor sells homes through a distribution network consisting of its own retail superstores and independent dealers, builders, and developers. As of March 25, 2005, the company operated 18 manufacturing facilities in 9 states that sold homes in 32 states. It also operated 121 retail superstores and builder locations. In addition, Palm Harbor provides property and casualty insurance for owners of manufactured and modular homes through its subsidiary, Standard Casualty Company. The company was formed in 1977 and is headquartered in Addison, Texas.


PULTE HOMES INC (PHM)

Pulte Homes, Inc. engages in the homebuilding and financial services business in the United States. Its Homebuilding segment consists of Domestic and International Homebuilding units. Domestic Homebuilding unit engages in the acquisition and development of land primarily for residential purposes and the construction of housing on such land targeted for the first-time, first and second move-up, and active adult home buyers within the continental United States. As of December 31, 2004, it had operations in 45 markets located in 27 states. International unit comprises the company's homebuilding activities in Mexico, Puerto Rico, and Argentina. Financial Services segment involves in mortgage banking and title operations. The company serves its customers through its sales team and brokers. Pulte Homes is headquartered in Bloomfield Hills, Michigan.


POPE RESOURCES (POPEZ)

Pope Resources, a Delaware Limited Partnership, through its subsidiaries, Olympic Resource Management LLC, and Olympic Property Group, engages in the ownership and management of timberland and development property in Washington and Oregon. The partnership operates through three segments: Fee Timber; Timberland Management and Consulting; and Real Estate. The Fee Timber segment engages in the growing and harvesting of timber from its own tree farms, and marketing of timber and timber products to both domestic and Pacific Rim markets. The partnership sells its logs domestically to lumber mills and other processors of wood fiber. The Timberland Management and Consulting segment provides timberland management, field services, and technical forestry consulting services to third-party owners and managers of timberland in Washington, Oregon, and California. It also acquires and manages investment grade timberland. The Real Estate segment manages the land development process for the company's 2,600-acre properties. It also manages the company's commercial properties in the town of Port Gamble, Washington. As of August 1, 2005, the company owned approximately 640,000 acres of timberland and development property in Washington and Oregon. Pope Resources is headquartered in Poulsbo, Washington.


PRB GAS TRANSPORTATION INC (PRB)

PRB Gas Transportation, Inc. engages in the ownership and operation of intrastate natural gas gathering systems. It owns approximately 200 miles of pipeline and gathers coal bed methane gas from approximately 450 wells in Wyoming's Powder River Basin. The company's 4.5 mile TOP system located in Campbell County, Wyoming services approximately 56 wells in the Powder River Basin area of Wyoming. PRB Gas Transportation was organized in 2003. It was formerly known as PRB Transportation, Inc. and changed its name to PRB Gas Transportation, Inc. in 2004. The company was founded in 2003 and is based in Denver, Colorado.


POWERSHARES EXCHANGE-TRADED FUND TRUST (PRN)

The investment seeks results that correspond to the price and yield performance, before fees and expenses, of the Dynamic Industrial Sector Indellidex index. The fund will invest at least 80% of assets in common stocks of industrial companies. It will invest at least 90% of assets in common stocks that comprise the index. The index consists of approximately 60 U.S. industrial companies. These companies are principally engaged in the business of providing industrial products and services, including engineering, heavy machinery, construction, electrical equipment, aerospace and defense and general manufacturing.


QUANTA SERVICES INC (PWR)

Quanta Services, Inc. operates as a provider of specialty contracting services. It offers end-to-end network solutions to the electric power, gas, telecommunications, cable television, and specialty services industries in the United States. The company's services include designing, installing, repairing, and maintaining network infrastructure. It also offers ancillary services, such as inside electrical wiring, intelligent traffic networks, cable, and control systems for light rail lines, airports, and highways; and specialty rock trenching, directional boring, and road milling for industrial and commercial customers. The company was founded in 1997 and is headquartered in Houston, Texas.


U.S. CONCRETE INC (RMIX)

U.S. Concrete, Inc., through its subsidiaries, engages in the production and sale of concrete and related construction materials in the United States. Its products comprise ready-mixed concrete; precast concrete, including specialty-engineered structures, custom signage, manholes, catch basins, highway barriers, and curb inlets; building materials, such as rebar, wire mesh, color additives, curing compounds, grouts, wooden forms, and other items; aggregates; and concrete masonry. The company also provides formulation of mixtures for specific design uses, onsite and lab-based product quality control, and customized delivery programs. It primarily offers its products and services to general contractors, developers, and home builders. U.S. Concrete had 88 fixed and 7 portable ready-mixed concrete plants, 8 precast concrete plants, 3 concrete block plants, and 1 aggregates quarry, as of April 19, 2005. The company was founded in 1948 and is headquartered in Houston, Texas.


RPM INC (RPM)

RPM International, Inc. engages in the manufacture, marketing, and sale of specialty paints, protective coatings and roofing systems, and sealants and adhesives for industrial and consumer markets worldwide. Its Industrial segment provides sealants and institutional roofing systems; polymer flooring systems, and molded and pultruded fiberglass reinforced plastic gratings; heavy-duty corrosion control coatings, structural and architectural fireproofing products, and primary and secondary containment linings; exterior insulating finishing systems, including textured finish coats, sealers, and variegated aggregate finishes; powder coatings, fluorescent colorants and pigments, concrete and masonry additives and related construction chemicals, commercial carpet and floor cleaning solutions, industrial and commercial floor systems, specialty adhesives and sealants, fuel additives, wood and lumber treatments, and pleasure marine coatings. This segment sells its products directly to contractors, distributors, and end-users. The company's Consumer segment provides coating products; caulks and sealants, patch and repair products, and adhesives; specialty products for surface preparation, primers and sealers, mold and mildew prevention and maintenance, wallpaper removal and application, and waterproofing; and hobby paints and cements, wood furniture finishes and touch-up products, deck and fence restoration products, wallcoverings and fabrics, metallic and faux finish coatings, shellac-based specialty coatings, and edible glazes and food coatings. This segment sells its products to mass merchandisers, home improvement centers, hardware stores, paint stores, automotive supply stores, and craft shops through distributors. As of May 31, 2005, RPM marketed its products in approximately 149 countries and territories. The company was founded in 1947 and is headquartered in Medina, Ohio.


REPUBLIC SERVICES INC (RSG)

Republic Services, Inc. operates in the domestic nonhazardous solid waste industry in the United States. It provides environmental services, including solid waste collection, transfer, disposal, and recycling services. The company provides its services to commercial, industrial, municipal, and residential customers through 140 collection companies in 22 states. As of December 31, 2004, it owned or operated 96 transfer stations, 58 solid waste landfills, and 35 recycling facilities. The company was incorporated in 1996 and is headquartered in Fort Lauderdale, Florida.


RYLAND GROUP INC (RYL)

The Ryland Group, Inc. engages in homebuilding and mortgage-financing businesses primarily in the United States. The company's operations span various aspects of the home buying process, including design, construction, and sale to mortgage origination, title insurance, settlement, escrow, and homeowners insurance brokerage services. Its Homebuilding segment markets detached and attached single-family homes, which are targeted to entry-level and move-up buyers, as well as to active adults seeking retirement housing. As of December 31, 2004, the company operated in 339 communities in 27 markets in the United States. The company's Financial Services segment provides mortgage-related products and services, and insurance brokerage services primarily to the company's homebuilding customers. It arranges various types of mortgage financing, including conventional, federal housing administration, and veterans administration mortgages, with various fixed and adjustable-rate features. The Ryland Group was founded in 1967 and is headquartered in Calabasas, California.


RAYONIER INC REIT (RYN)

Rayonier, Inc. engages in the sale of timber and real estate, and in the production and sale of cellulose fibers primarily in the United States and New Zealand. The company operates through four segments: Timber and Real Estate, Performance Fibers, Wood Products, and Other. The Timber and Real Estate segment buys and manages timberlands; sells standing timber at auction to third parties, delivered logs, and land for real estate development and large tract conservation. The Performance Fibers segment produces specialty cellulose products, which are used in dissolving chemical applications. These products also include specialty paper applications used for decorative laminates for counter tops, automotive air and oil filters, shoe innersoles, battery separators, circuit boards, and filter media for the food industry. It also supplies performance fibers for absorbent hygiene products, which are used as an absorbent medium in products, such as disposable baby diapers, feminine hygiene products, incontinence pads, convalescent bed pads, industrial towels and wipes, and nonwoven fabrics; and an ultra-thin engineered absorbent core material that goes into super-absorbent feminine hygiene and diaper products, and other applications. The Wood Products segment sells dimension and specialty lumber and medium-density fiberboard products. The Other segment operates domestic and export log trading businesses in the Northwest United States, New Zealand, and Chile, including exporting logs from New Zealand and Chile. It also purchases lumber and wood panel products for sale in both domestic and export markets. The company has elected to be taxed as a real estate investment trust. As a result, it would not be subject to corporate income tax on that portion of its net income that is distributed to shareholders. The company, formerly known as Rainier Pulp & Paper Company, was founded in 1926 and is headquartered in Jacksonville, Florida.


SHERWIN-WILLIAMS COMPANY (SHW)

The Sherwin-Williams Company engages in the manufacture, distribution, and sale of coatings and related products to professional, industrial, commercial, and retail customers primarily in North and South America. The company operates through four segments: Paint Stores, Consumer, Automotive Finishes, and International Coatings. The Paint Stores Segment markets and sells Sherwin-Williams branded architectural paints and coatings, industrial and marine products, and original equipment manufacturer product finishes and related items. As of December 31, 2004, the Paint Stores segment operated 2,983 paint stores. The Consumer segment develops, manufactures, and distributes various paints, coatings, and related products to third party customers and the Paint Stores segment. The Automotive Finishes segment develops, manufactures, and distributes various motor vehicle finish, refinish, and touch-up products. It also licenses certain technology and trade names worldwide, as well as distributes Sherwin-Williams branded automotive finish and refinish products through its network of automotive branches. The Automotive Finishes segment operated 200 automotive branches, as of December 31, 2004. The International Coatings segment develops, licenses, manufactures, and distributes various paints, coatings, and related products worldwide through 76 company-operated specialty paint stores, as of the above date, and by outside selling functions to other dealers and distributors. The company was founded by Henry Sherwin and Edward Williams in 1866. The Sherwin-Williams Company is headquartered in Cleveland, Ohio.


SKYLINE CORPORATION (SKY)

Skyline Corporation engages in the design, production, and distribution of manufactured housing and towable recreational vehicles in the United States. The manufactured homes include single section homes, multisection homes, and modular homes. The principal markets for its manufactured homes are the suburban and rural areas of the continental United States. The company's recreational vehicles include travel trailers, such as park models and fifth wheels. Skyline distributes its products through dealers. The company was incorporated in 1959, as successor to a business founded in 1951. Skyline is headquartered in Elkhart, Indiana.


STANDARD PACIFIC LP (SPF)

Standard Pacific Corp. engages in building and selling single-family attached and detached homes in the United States. It also provides mortgage financing and title services to its homebuyers through its subsidiaries and joint ventures. As of December 31, 2004, the company had 296 projects under development. The company operates in California, Texas, Arizona, Colorado, Florida, and the Carolinas. Standard Pacific has project joint venture with Jacobs Homes, Inc. The company was founded in 1986 and is headquartered in Irvine, California.


STERICYCLE INC (SRCL)

Stericycle, Inc. operates as a medical waste management company in North America. It offers various services and operations that comprise collection, transportation, treatment, and disposal together with related training and education programs, consulting services, and product sales. In addition, the company provides other services designed to help clients ensure and maintain compliance with OSHA regulations, sharps management services, infection control tracking, and pharmaceutical returns, as well as develops and supplies containers, including its Steri-Tub container, a reusable leak and puncture-resistant container. As of December 31, 2004, Stericycle operated 52 treatment and 103 additional transfer and collection facilities in 40 states, Puerto Rico, Canada, Mexico, and the United Kingdom. Its customers include small medical waste generators, such as outpatient clinics, medical and dental offices, and long-term and subacute care facilities; and large medical waste generators, such as hospitals, blood banks, and pharmaceutical manufacturers. The company was founded in 1989 and is headquartered in Lake Forest, Illinois.


VIRGIN MEDIA INC (SWIM)

INVESTools, Inc. provides investor education products and services primarily through correspondence and online in the United States. Its products and services provide learning in various interactive delivery formats, including instructor-led synchronous and asynchronous online courses; in-person workshops; one-on-one and one-to-many online coaching programs; and telephone, live-chat, and email support. The company offers Investools Method, an approach to educated investing that is an integration of a disciplined investing process, Web-based tools, personalized instruction, and support. It also provides various courses, such as Stocks Course, a foundational course for experienced and beginning students; Basic Options that provides coaching on trading options; Advanced Technical Analysis, which is designed to teach technical analysis and advanced charting techniques to identify investment opportunities; Advanced Options, a multi-part course designed to teach advanced options; Investools Currency Trader that prepares students to trade in the foreign exchange markets; and Advanced Currency Trader, which expands on the concepts and strategies taught in the Investools Currency Trader course. In addition, the company offers education programs that provide additional online or home study courses, coaching access, and extended access to the Investools Online Web site. Further, INVESTools provides front end trading platforms that allow its customers to trade electronically and provides trading tools and analytics, including tools for implementing options strategies, as well as a range of products, including equities, exchange traded options, futures, mutual funds, and bonds. The company was founded in 1996 and is headquartered in New York, New York.


SYNAGRO TECHNOLOGIES INC (SYGR)

Synagro Technologies, Inc. engages in recycling biosolids, and water and wastewater residuals. The company's services comprise drying and pelletization, composting, product marketing, incineration, alkaline stabilization, land application, collection and transportation, regulatory compliance, dewatering, and facility cleanout services. As of December 31, 2004, it operated 6 heat-drying facilities, 5 composting facilities, 3 incineration facilities, and 31 permanent and 35 mobile dewatering units. As of the same date, the company served approximately 600 municipal and industrial water, and wastewater treatment accounts in the United States and the District of Columbia. Synagro Technologies was incorporated in 1986 and is based in Houston, Texas.


TAT TECHNOLOGIES LTD (TATTF)

TAT Technologies, Ltd. engages in the manufacture and sale of a range of heat transfer equipment used in mechanical and electronic systems on-board commercial and military aircraft and in various other electronic equipment. It provides a line of heat transfer equipment that includes heat exchangers, precoolers, oil coolers, and cold plates, or heat transfer equipment. The company also involves in the remanufacture, overhaul, and repair of heat transfer equipment and other aircraft components. In addition, TAT Technologies manufactures, sells, and services certain related products for use in aircraft and electronic systems. In addition, it designs, develops, and manufactures aviation accessories, such as valves and pumps, secondary power systems, and various instrumentation and electronic assemblies. The company, formerly known as Galaxy Graphics, Ltd., was founded in 1985 and changed its name to T.A.T. Technologies, Ltd. in 1992. T.A.T. is based in Gedera, Israel.


TECUMSEH PRODUCTS COMPANY (TECUA)

Tecumseh Products Company manufactures hermetic compressors for air conditioning and refrigeration products, gasoline engines and power train components, and pumps. It operates in four segments: Compressor Products, Electrical Components, Engine and Power Train Products, and Pump Products. The Compressor Products segment offers various air conditioning and refrigeration compressors, and refrigeration condensing units. Its products vary from fractional horsepower models used in small refrigerators and dehumidifiers, to large compressors used in unitary air conditioning applications. The Electrical Components segment offers alternate current and direct current electric motors, blowers, gear motors, and linear actuators for applications in the automotive, appliance and consumer durables, heating and cooling equipment, computer and office equipment, industrial machinery, commercial equipment, aerospace, and healthcare markets. This segment also manufactures other electrical components that work in tandem with electric and electronic devices to manage and regulate their operation and provide connectivity, and other motor parts, such as overloads, relays, thermostats, terminals, laminations, and electronic circuit boards. The Engine and Power Train Products segment offers two and four-cycle gasoline engines for use in lawn and garden applications, and other consumer and light commercial applications. It also provides transmissions, transaxles, and related parts for use primarily in lawn and garden tractors, and riding lawn mowers. The Pump Products segment provides small submersible pumps used in various industrial, commercial, and consumer applications; and heavy-duty centrifugal type pumps used in the construction, mining, agricultural, marine, and transportation industries. The company sells its products to original equipment manufacturers and aftermarket distributors worldwide. Tecumseh Products Company was founded in 1930 and is headquartered in Tecumseh, Michigan.


TECUMSEH PRODUCTS COMPANY (TECUB)

No description available.


TOLL BROTHERS INC (TOL)

Toll Brothers, Inc. engages in the development, construction, financing, and sale of residential homes in the United States. It builds luxury single-family detached and attached home communities; master planned luxury residential resort-style golf communities; and urban low, mid, and high-rise communities principally on land it develops and improves. The company's operations include architecture, engineering, mortgage, title, land development and sale, golf course development and management, home security, landscape, cable T.V. and broadband Internet delivery, lumber distribution, and house component assembly. In addition, it owns and operates golf courses and country clubs. The company serves move-up, empty-nester, active-adult, and second-home home buyers. It markets its communities through direct sales force, local cooperative realtors, newspapers, billboards, and Internet in Arizona, California, Florida, Delaware, Maryland, Pennsylvania, and South Carolina. As of October 31, 2004, the company operated 292 communities comprising approximately 24,343 home sites. Toll Brothers was formed in 1967 and is headquartered in Montgomery County, Pennsylvania.


UNIVERSAL FOREST PRODUCTS INC (UFPI)

Universal Forest Products, Inc. engages in the manufacture, engineering, treatment, and marketing of lumber, composite wood, plastic, and other building products. The company offers wood and wood-alternative products for the do-it-yourself retail home centers (DIY/retail); structural lumber products for the manufactured housing industry; engineered wood components for the site-built construction market; and specialty wood packaging for various industries throughout the United States, Canada, and Mexico. It offers decking, balusters, spindles, decorative posts, handrails, stair risers, stringers, and treads; fences, gates, posts, and other components; home and garden and landscaping items; lattice; and storage building frames and trusses in the DIY/retail market. In addition, the company provides composite and plastic alternative products, which include railings, caps, and sleeves. It also sells engineered wood products, which include roof trusses, wall panels, and engineered floor systems. The company offers engineered wood products to frame residential or commercial projects, including roof and floor trusses, wall panels, open joist, and I-joists in the site-built construction market. It also installs engineered wood products for customers. Universal Forest Products offers roof trusses, lumber, plywood, particleboard, and dimensional lumber in the manufactured housing market. The company also supplies pallets, crates, and wooden boxes for packaging, shipping, and material handling purposes in the industrial and other markets. Universal Forest Products was organized in 1955 and is headquartered in Grand Rapids, Michigan.


USG CORPORATION (USG)

USG Corporation, through its subsidiaries, engages in the manufacture and distribution of building materials. The company operates in three segments: North American Gypsum, Worldwide Ceilings, and Building Products Distribution. North American Gypsum segment manufactures and markets gypsum wallboards, cement boards, and fiber panels primarily in the United States, Canada, and Mexico. Its products are used for various building applications, such as interior walls, ceilings, and floors in residential, commercial, and institutional construction, as well as for industrial applications. Worldwide Ceilings segment manufactures and markets interior systems products worldwide. Its interior ceilings products, such as ceiling grid and acoustical ceiling tile are primarily used in commercial applications in United States, Canada, Mexico, Europe, Latin America, and the Asia-Pacific region. Building Products Distribution segment distributes gypsum wallboard, drywall metal, ceilings products, joint compound, and other building products in the United States. The company distributes its products through building materials dealers, home improvement centers and other retailers, specialty wallboard distributors, and contractors. In addition, it manufactures mineral fiber products and metal specialty systems. USG Corporation was founded in 1901 and is headquartered in Chicago, Illinois. The company and its subsidiaries filed a voluntary petition for reorganization under Chapter 11 of the United States Bankruptcy Code in June 2001. USG Corporation operates its business as debtors-in-possession.


UNITED STATES LIME & MINERALS INC (USLM)

United States Lime & Minerals, Inc., through its subsidiaries, manufactures lime and limestone products for the construction, steel, municipal sanitation and water treatment, paper, and agriculture industries. The company extracts limestone from its quarries and processes it for sale as pulverized limestone, quicklime, hydrated lime, and lime slurry. The company sells its products to steel producers, municipal sanitation and water treatment facilities, paper manufacturers, chemical producers, roofing shingle manufacturers, poultry and cattle feed producers, glass manufacturers, and highway, street, and parking lot contractors in Arkansas, Colorado, Indiana, Kansas, Louisiana, Mississippi, Missouri, New Mexico, Oklahoma, Pennsylvania, Tennessee, Texas, and West Virginia. United States Lime & Minerals was founded in 1948 and is headquartered in Dallas, Texas.


VALSPAR CORPORATION (VAL)

The Valspar Corporation engages in the manufacture and distribution of coatings, paints, and related products. It operates in two segments, Coatings and Paints. The company's Coatings segment offers industrial and packaging coatings products. Industrial coatings product line includes various decorative and protective coatings for metal, wood, plastic, and glass for sale to original equipment manufacturer customers in North America, South America, Australia, Europe, and Asia. Its product line also includes fillers, primers, stains, and topcoats used by customers in various manufacturing industries, including building products, transportation, appliances, automotive parts, furniture, agricultural equipment, construction equipment, and metal fabrication. Packaging coatings product line includes coatings for both interior and exterior use in metal packaging containers, such as food containers and beverage cans, as well as produces coatings for aerosol and paint cans, bottle crowns for glass and plastic packaging, and glass bottle closures. The company's Paints segment offers architectural paint products, which include interior and exterior paints, stains, primers, varnishes, floor paints, and specialty decorative products, such as enamels, aerosols, and faux finishes used in the do-it-yourself market. The segment also offers automotive refinish paints that are sold through automotive refinish distributors and body shops; and aerosol spray paints that are sold through automotive distributors and automotive supply retailers. It distributes its products through home centers, mass merchants, hardware wholesalers, and independent dealers. The company also offers specialty polymers, colorants, and gelcoats, as well as sells furniture protection plans. The Valspar was founded in 1806 and is headquartered in Minneapolis, Minnesota.


VULCAN MATERIALS COMPANY (VMC)

Vulcan Materials Company engages in the production, distribution, and sale of construction aggregates and other construction materials and related services in the United States and Mexico. Its construction aggregates include crushed stone, sand and gravel, rock asphalt, and recrushed concrete. The company's construction aggregates are employed in highway construction and maintenance, as well as in the production of asphaltic and portland cement concrete mixes. It also offers other products and services, including asphalt mix and related products, ready-mixed concrete, trucking services, and water transportation services. The company is headquartered in Birmingham, Alabama.


VERSAR INC (VSR)

Versar, Inc. provides professional services to the government and private sectors. The company operates in two segments, Infrastructure and Management Services, and National Security. The Infrastructure and Management Services segment provides a range of services, including remediation/corrective actions; site investigations; remedial designs; construction, operation, and maintenance of remedial systems; and engineering, design, and construction management to industrial, commercial, and government facilities. The National Security segment provides various testing, evaluation, system integration, and field support services in the chemical domain. Versar was organized in 1969 and is headquartered in Springfield, Virginia.


WALTER INDUSTRIES INC (WLT)

Walter Industries, Inc. engages in the homebuilding, financing, industrial products, natural resources, and other businesses. Its Homebuilding segment offers detached, single-family residential homes, primarily in the southern United States, as well as provides mortgage financing on a portion of the homes sold. The company's Financing segment offers financing to the homebuyers that is secured by first mortgages and liens, as well as originates mortgage loans by purchasing them from other homebuilders and third parties. Walter Industries' Industrial Products segment manufactures and sells a line of ductile iron pressure pipe, fittings, valves, hydrants, and other cast iron products. Its Natural Resources segment comprises coal mining and methane gas operations. This segment mines and sells coal from three underground mines in Alabama, and extracts and sells natural gas from the coal seams owned or leased by the company. In addition, Walter Industries manufactures and distributes furnace and foundry coke to the steel industry, as well as to the ductile iron foundries. This segment also manufactures specialty chemicals and slag fiber. The company was founded in 1946 and is headquartered in Tampa, Florida.


WASTE MANAGEMENT INC (WMI)

Waste Management, Inc. provides waste and environmental services in North America. The company provides collection, transfer, recycling and resource recovery, disposal, and landfill services. It also develops, operates, and owns waste-to-energy facilities in the United States. In addition, WMI rents and services portable restroom facilities to municipalities and commercial customers; and provides street and parking lot sweeping services. The company's network includes 429 collection operations, 366 transfer stations, 289 active landfill disposal sites, 17 waste-to-energy plants, 138 recycling plants, and 85 landfill gas projects. Its customers primarily include commercial, industrial, municipal, and residential customers; other waste management companies; electric utilities; and governmental entities. Waste Management, Inc. was founded in 1894. It was formerly known as USA Waste Services, Inc. and changed its name to Waste Management, Inc. in 1998. The company is headquartered in Houston, Texas.


WASTE INDUSTRIES USA INC (WWIN)

Waste Industries USA, Inc. operates as a vertically integrated solid waste services company. It provides waste collection, transfer, disposal, and recycling services to residential, commercial, and industrial service locations in the states of North Carolina, South Carolina, Virginia, Tennessee, Mississippi, Georgia, and Florida. The company operates transfer stations, which receive, compact, and transfer solid waste to large vehicles for transport to landfills. Waste Industries USA also recycles office paper, cardboard, newspaper, aluminum and steel cans, plastic, glass, pallets, and yard waste. In addition, the company operates convenience sites, as well as offers disposal services. As of December 31, 2004, Waste Industries USA operated 34 collection operations, 25 transfer stations, approximately 90 county convenience drop-off centers, 11 recycling facilities, and 10 landfills. The company was founded in 1970 by Lonnie C. Poole, Jr. and is headquartered in Raleigh, North Carolina.


WEYERHAEUSER COMPANY (WY)

Weyerhaeuser Company principally engages in the growing and harvesting of timber, as well as in the manufacture, distribution, and sale of forest products principally in the United States and Canada. The company manages 6.4 million acres of company-owned and 0.8 million acres of leased commercial forestland in North America and in the southern Hemisphere. It produces and sells softwood lumber, plywood, veneer, composite panels, oriented strand board, hardwood lumber, and engineered lumber products. Weyerhaeuser also manufactures papergrade, absorbent, dissolving, and specialty pulp grades; and a range of coated and uncoated papers, and business forms; as well as offers liquid packaging board used primarily in the production of containers designed to hold liquid products. In addition, it manufactures linerboard, corrugating medium, and kraft paper primarily used to produce corrugated boxes, and paper bags and sacks; industrial and agricultural packaging; and inks, printing plates, graphics packaging, single-face and preprint products, and retail packaging displays; as well as engages in the recycling that include a wastepaper collection system and its sale to company mills and worldwide customers. Further, the company develops single-family housing and residential lots for sale, including development of master-planned communities primarily in metropolitan areas in southern California, Nevada, Washington, Texas, Maryland, and Virginia. Weyerhaeuser was founded in 1900 and is based in Federal Way, Washington.