BAM Nuttall is crazy about civil engineering and construction. The firm is involved in infrastructure and transportation projects throughout the UK, including roads, railways, marine facilities, airports, and water treatment plants. BAM Nuttall also provides specialty contracting services such as tunneling and mechanical and electrical engineering and offers rail industry training courses. Subsidiaries include marine civil engineering firm Nuttall John Martin Construction and geotechnical specialist BAM Ritchies. The company has about 20 offices throughout the country. Dutch engineering Group Royal BAM acquired BAM Nuttall (then named Edmund Nuttall) in 2002.

Enka focuses on building airports, bridges, industrial plants, hospitals, petrochemical plants, power plants, shopping malls, and other large structures and complexes. Enka also rents and manages office and retail buildings. The company operated hypermart shopping centers in Russia, but handed over operations of the markets by renting the spaces to Auchan in 2007. The transaction signals Enka's move away from retail management. Other operations include machinery distribution and management of natural-gas power plants. Tracing its roots back to 1957, Enka was formally established in 1967.

Nuclear Fuel Services, Inc., the company has a long history of converting swords into plowshares, or in this case, nuclear weapons into nuclear fuel. It converts weapons-grade highly enriched uranium to low-enriched uranium that can be used as fuel for nuclear power plants. NFS also provides decontamination, decommissioning, and remediation of nuclear sites, as well as packaging and shipping of nuclear materials. The company was acquired by Babcock & Wilcox in 2008 for almost $160 million.

Rosboro Lumber is deeply rooted in building supplies. The company produces a wide variety of products, including studs and plywood for the homebuilding market, laminated beams and frames for heavy construction, and hardwood door and window frames through subsidiary Washington Hardwoods. The company owns timberlands in western Oregon; it also buys timber from other public and private land owners. Rosboro operates about a half-dozen production facilities. It sells its products to customers in the US, Canada, Latin America, and Japan. A group of about 60 investors owns Rosboro. T. W. "Whit" Rosborough founded the company as a small lumber mill in the 1930s.

Engineering and consulting firm KEMRON Environmental Services provides analytical testing, consulting, emergency response, environmental assessment and engineering, geotechnical testing, and site remediation. Customers include branches of the US military and other federal agencies. Its client base also includes private sector companies ranging from small businesses to major manufacturers and FORTUNE 500 companies. KEMRON operates from offices in Georgia, Illinois, Ohio, Virginia, Washington, and West Virginia. The company is owned by its employees.

X-nth (say "eks' en' th"). Going to the "nth degree" for customers is what the company says it strives for. It designs, installs, and maintains mechanical, electrical, plumbing, lighting, communications, fire and safety, environmental, and specialty systems for companies in the healthcare, science and technology, entertainment and gaming, and hospitality industries. X-nth has helped create casinos, theme parks, hotels, hospitals, and labs for Discovery Communications, Time Warner, the FDA, MD Anderson, Harrah's, Walt Disney World, and others. The company works internationally from nine US offices.

Gorman Richardson Architects (GRA) have gone back to the drawing board for more than 30 years. The firm provides a full range of architectural and interior design services. GRA designs corporate and manufacturing facilities, retail buildings, labs and medical centers, educational and institutional structures, public and civic works, and residences. The firm also provides design services for renovating historic buildings and specializes in sustainable design. Gorman Richardson has designed projects for the Boston Public Library, Brown University, and EMC. President Mike Gorman and VP Scott Richardson started GRA in 1976.

OPT-Sciences Corporation, through its subsidiary, O & S Research, Inc., deposits anti-glare and transparent conductive optical coatings on glass used primarily to cover instrument panels in aircraft cockpits. Its products enable pilots to read aircraft instruments in direct sunlight or at night, or in covert situations using appropriate night vision filters. The company offers coatings to various types of glass face plates, which are mounted on the front of liquid crystal displays (LCDs), cathode ray tubes, and electromechanical displays. It also provides glass cutting, grinding, and painting services, as well as manufactures wedge glass lenses for electro-mechanical displays. In addition, the company provides a range of other specialty instrument glass, including night vision filter glass, circular polarizers, touchpads, glass sandwiches for LCDs, and other custom designed specialty glass components and assemblies. It primarily offers its products to commercial, business, and regional aircraft market, as well as to the military aircraft market. The company was founded in 1956 and is based in Cinnaminson, New Jersey.

T. Clarke provides electrical engineering and contracting services in the UK. Its vast menu of services includes building management systems, data cabling, instrumentation, street lighting, and telephone systems. The firm and its 13 subsidiaries have taken on projects ranging from hospitals and sports arenas to railways and shopping centers for the likes of British Telecom, Financial Times, The British Land Company, the Metropolitan Police, and BUPA Hospitals, among a host of others. Tommy Clarke founded his namesake company in 1889. The company is known for its electrotechnical apprentice training program which supports hundreds of young electricians yearly.

Masco Corporation is today one of the world’s largest manufacturers of brand-name products for the home improvement and new home construction markets. Masco is also a leading provider of a variety of installed products and services, including insulation, for homebuilders.

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