CentiMark hit the nail right on the head when it got into the roofing business. The company is one of the largest commercial and industrial roofing contractors in the US and Canada, providing roof inspection, repair, and emergency leak service. CentiMark typically works on flat roofs using EPDM rubber, thermoplastics, bitumen, metal, and coatings. Top customers include NASA and the US Army Corps of Engineers. Its QuestMark division offers commercial, industrial, and retail flooring, do-it-yourself products, and floor maintenance and cleaning products. Chairman and CEO Edward Dunlap founded CentiMark as an industrial cleaning business in 1967. The company, which has 65 offices, is owned by its employees.

Black & Veatch Ltd. engineering firm provides consulting, refurbishment, and decommissioning services for water-related projects in Europe. A subsidiary of Black & Veatch Holding, the group provides design and management of dams, pipelines, canals, water/wastewater and industrial water treatment plants, as well as the refurbishment of water and wastewater industry structures and facilities. Black & Veatch Water Europe also provides mechanical and electrical engineering design services, building design and project management services, and IT services.

Keepmoat Homes (formerly Haslam Homes) specializes in building houses for first- and second-time buyers throughout Yorkshire, The Midlands, North East, and North West England. Staying away from building luxury homes with fancy living rooms and chandeliers, the homebuilder's business strategy, instead, is to work with local councils, regeneration partners, and other local affiliates to build affordable homes that are in line with government policies. Keepmoat constructs about 1,000 houses each year with many developments located in older communities that have seen better days. The company is a part of the Keepmoat plc group of companies and operates from five offices throughout England.

Waste Management, Inc. provides integrated waste management services in North America. The company offers collection, transfer, recycling, disposal, and waste-to-energy services. Its recycling operations include collection and materials processing, plastics materials recycling, and commodities recycling. The company also provides recycling brokerage and electronic recycling services, including the collection, sorting, and disassembling of electronics to reuse or recycle various collected materials. In addition, it engages in renting and servicing portable restroom facilities to municipalities and commercial customers under the Port-o-Let name; and involves in landfill gas-to-energy operations comprising recovering and processing the methane gas produced naturally by landfills into a renewable energy source, as well as provides street and parking lot sweeping services. Further, the company offers portable self-storage, fluorescent lamp recycling, and healthcare solutions services, as well as provides services on behalf of third parties for construct waste facilities. It serves commercial, industrial, municipal, and residential customers, as well as other waste management companies, electric utilities, and governmental entities. The company was formerly known as USA Waste Services, Inc. and changed its name to Waste Management, Inc. in 1998. Waste Management, Inc. was incorporated in 1987 and is based in Houston, Texas.

EA Engineering, Science, and Technology wants to stop pollution before it starts by offering environmental consulting services. The company's specialties include brownfields and urban redevelopment, environmental compliance management, and natural resources management. Its more than 450 professionals have completed more than 100,000 environmental projects worldwide (more than $1 billion of services). Customers include government agencies and industrial manufacturers. EA Engineering operates from more than 24 offices -- 21 in the US (including facilities in Alaska and Hawaii) and one in Guam.

Peckham Industries has a crush on road materials. Peckham Industries, Inc. produces asphalt, crushed stone, ready mix concrete, and liquid calcium chloride (used to melt ice in the winter and to keep road dust down in the summer). It also builds and repairs roads. Peckham Industries, Inc. and its subsidiaries operate throughout New England with locations in New York, Vermont, and Connecticut. Peckham's plants include liquid asphalt facilities, hot mix plants, and a reclaiming facility. The company's Peckham Materials Corp. unit operates quarries and supplies aggregates through the Hudson River Valley. William Peckham, father of chairman and president John Peckham, founded Peckham Road Corp., the flagship of Peckham Industries, in 1924.

C.D. Smith Construction works on commercial, institutional, and industrial projects. It builds manufacturing, retail, correctional, health care, and education facilities, as well as water treatment plants. The company offers general contracting and design/build services and also provides specialty contracting services such as steel erection, masonry and concrete work, carpentry, and demolition. Charles D. Smith, grandfather of president Gary Smith, founded the company in 1936.

Bovis Lend Lease is a key player in the global construction market. The subsidiary of Australian real estate firm Lend Lease provides management and construction services for nearly every project phase, including consultation, design/build services, and construction management. Its many projects have included the Staten Island September 11 Memorial, London's Paddington Central Station, and The Blue City development project in Oman. Bovis Lend Lease operates in more than 30 countries, offering management services for commercial, residential, government, industrial, and infrastructure projects. Its technology division provides design/build services focused on IT facilities.

Overland Contracting Inc, the company, a wholly-owned subsidiary of Black & Veatch, offers engineering, procurement, and construction services on electric utility substations, power plants, water and wastewater facilities, telecommunications sites, and gas, oil, and chemical facilities throughout the US. From testing to laying the foundation, the company is involved in nearly every part of the building process. Headquartered in Georgia, the company also has regional offices in Alabama, Florida, Kansas, Michigan, and North Carolina. Customers have included Florida Power & Light Company and T-Mobile.

Chapco is a group of four privately-owned companies that provide mechanical and electrical installation, facilities management, brownfield redevelopment, and pre-fabricated heating and ventilation installation. Markets include leisure facilities, offices, stores, and warehouses. It has worked on sites with a total developed building area of more than 10 million sq. ft. during the last five years. Completed projects have included a 16-screen multiplex in Romford, a Toys "R" Us in Leeds, and MFI Furniture Centres throughout the UK. The company has also taken on projects for Nissan and ProLogis. Chapco was founded in 1976.

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