Worcester Heat Systems may have to look for a new line of work. Also known as Worcester Bosch, the UK company primarily makes oil and gas boilers (cast iron, combination, condensing, floor-standing, wall-mounted, and system boilers). Other offerings include solar panel hot water heating systems (Worcester Blue Skies) and under-floor heating systems. Founded in 1962, Worcester Heat Systems was acquired by automotive component manufacturer Bosch in 1996 and is part of the Worcester Bosch group.

Sekisui Chemical (named for a concept of power taken from Sun-Tsu's Art of War) is a central corporation of the Sekisui "keiretsu --" companies affiliated through cross-ownership. Its main segments include housing, urban infrastructure and environmental products, and high performance plastics. Prefabricated housing (detached steel-framed and wooden-framed construction), accounts for about half of its sales. Other products include plastic pipes and fittings (used in water and sewage systems), medical multifrequency body fat meters, pipe valves, foams for automotive and construction applications, and rain gutters.

Environmental engineering and consulting firm SC&A provides emergency response and homeland security services, environmental management, information and communication, waste remediation, and risk assessment services through its offices in New York, New Jersey, Missouri, and Virginia. The company works mainly for agencies of the US government (including the Department of Defense, the Department of Energy, and the Department of Homeland Security); other clients have included Boeing and General Electric. Company chairman Sanford Cohen is the SC in SC&A; his associates are the A. The company was founded in 1981.

NCC AB,the company is the Nordic region's second-largest construction company (behind Skanska). The company operates through three divisions: NCC Construction builds highways and other civil engineering facilities, residential developments, and office and retail space. NCC Property Development develops commercial properties. NCC Roads produces aggregates, operates asphalt plants and gravel and rock pits, and provides paving and road services. Although it primarily operates in Scandinavia, the company also builds houses in Germany and the Baltic region. Swedish firm Nordstjernan controls nearly 55% of NCC.

Maguire Group is an architectural, engineering, planning, and construction management firm that services clients from its 12 offices throughout the northeastern US and in the US Virgin Islands. The company, which was founded in 1938, was the first to ever receive the Presidential Award for Design Excellence. However, the firm, which was part of the team that designed Boston's ill-fated Big Dig project, developed serious financial problems from the fallout from that debacle. In 2009, Carlos Duart became the new president and CEO of Maguire Group after buying a controlling interest from retiring owner and CEO Richard Repeta. Maguire Group now operates as a subsidiary of Duart's Miami-based Metric Engineering.

Pribuss Engineering is an air-conditioning, heating, plumbing, and fire sprinkler system contractor for both residential and commercial clients needing to build new systems or remodel, alter, or improve existing ones. The mechanical construction firm handles a large part of its work in-house, only subbing out about 5%. Stanford University engineering graduate Rudy Pribuss started the company in 1968.

Heritage-Crystal Clean, Inc. provides industrial and hazardous waste services to small and mid-sized customers in the United States. It offers a range of services, including parts cleaning, containerized waste management, used oil collection, and vacuum truck services. The company provides its cleaning services by offering parts cleaning equipment and chemicals to remove oil and grease, and other contaminants from engine parts and machine parts requiring cleaning. It offers waste management services by collecting drums, pails, boxes, and other containers of hazardous and non-hazardous waste materials from its customers. The company provides its vacuum truck services for the removal of mixtures of oil, water, and sediment from wastewater pretreatment devices. Its customers include businesses involved in vehicle maintenance operations, such as car dealerships, automotive repair shops, and trucking firms, as well as small manufacturers, such as metal product fabricators and printers. Heritage-Crystal Clean, Inc. was incorporated in 2007 and is headquartered in Elgin, Illinois.

CEMEX serves up cement with a multicultural accent. The subsidiary of Mexico-based CEMEX, S.A. de C.V. is one of the largest cement companies in the US, as well as the largest ready-mix company. In addition to cement and ready-mix, CEMEX also makes and sells concrete block and aggregates. It serves customers through nearly 15 cement plants, more than 330 ready-mix plants, about 50 cement terminals, and 95 aggregate quarries around the country. The United States accounts for about 20% of the Mexican company's revenue. The parent company operates in more than 50 countries around the world.

CORE Construction fits into the core clique of contractors in the southwestern US. The company, formerly Targent General, is one of the top contractors in the region; it also has offices in Florida and Illinois. CORE offers construction management, general contracting, and design/build services for municipal, educational, health care, office, residential, retail, sports, institutional, and industrial projects. It has worked on projects as diverse as Phoenix's Chase Field Ballpark, Dodge Theatre, and Lower Buckeye Jail. German immigrant Otto Baum founded the company in 1937.

Grupo Cementos de Chihuahua (GCC) sees the road to riches paved with plain old cement, not gold. The group's subsidiaries produce, market, and distribute cement, ready-mix concrete, aggregates, and other construction materials in the US, Mexico, and Bolivia. With about 10 facilities in operation, GCC has an annual production capacity of approximately 5 million tons of cement. Additional products include cement blocks and prefabricated concrete products. Holding company Control Administrativo Mexicano owns about three-quarters of GCC.

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