The Brock Group of Companies when they need a handyman. Through a network of about 15 subsidiaries, The Brock Group acts as a specialty contractor to such companies as Chevron, CITGO, Exxon Mobil, Shell Oil, and Valero. It offers scaffolding and shoring, environmental remediation, asbestos and lead abatement, general labor and maintenance, disaster response, fireproofing, and insulation. The firm also offers offsite blast cleaning for machines that need to kept in tip-top shape. Besides oil refineries, The Brock Group serves chemical plants, energy plants, nuclear power plants, industrial manufacturers, pulp and paper mills, and offshore facilities.

AMEC's got the power -- gas, oil, and nuclear. The engineering giant provides design, consulting, and project management services for the natural resources (oil sands, oil and gas, and mining), nuclear, clean energy, water, and environmental sectors. The company is active in the UK and the Americas, as well as other international locations such as Australia and the Middle East. AMEC is responsible for maintaining large, complex facilities such as nuclear power stations and oil and gas production facilities. The company also offers environmental consulting. Top clients include BP, Exxon Mobil, INPEX, Sellafield, and the US Air Force.

ESTec Systems is on the job. Through its Allan R. Nelson Engineering subsidiary, the company provides mechanical engineering (including fire investigations) and forensic engineering services (failure analysis and reporting for criminal and civil investigations and court cases) to the petrochemical, manufacturing, and drilling industries. It provides mechanical design, repair, construction, measurement, and certification services to oil, gas, mining, and construction companies from North and South America to Russia. ESTec also performs billing analysis for insurance companies investigating industrial accidents. The company was formed in 1989.

W.G. Mills has been going to school. The construction management and general contracting company is one of Florida's top school builders, tackling some 200 education facility projects. Operating as Mills Gilbane, the company also builds industrial, commercial/retail, residential (such as clubhouses and golf-course homes), and health care facilities. Its public facility projects include libraries and police stations. One of the top contractors in the US, Mills Gilbane is also a leading construction management at-risk firm. CEO Walter G. Mills founded his namesake business in 1972. Rhode Island-based Gilbane Building bought the company in 2010.

Aldridge Electric powers up the Windy City and other parts of the Midwest. The electrical contractor divides its business into six main areas: airport, industrial, power, drilling, highway, and transit. It works on projects ranging from Chicago's subway system to its airport runways. Additional activities include services for street lighting, traffic signals, high-voltage cabling and splicing, and foundation drilling. Aldridge Electric has worked for clients such as Commonwealth Edison Company and Exelon Corporation. The company is owned by CEO Ken Aldridge, grandson of company founder Leonard "Len" Aldridge, who started the business in the 1930s and incorporated it in 1952.

The original idea in 1979 recognized there was a niche available in the HVAC industry for a company that supplied high quality products, in a timely manner and backed up with outstanding customer service. Raymon fills those needs and continues to invent and reinvent the industry standards for quality, reliability, service and ingenuity.

Therm-O-Disc Incorporated was founded in Mansfield, Ohio in 1947. Today, as a subsidiary of Emerson and a part of Emerson Appliance Solutions and Emerson Climate Technologies, the company is a recognized world leader in the design and manufacture of temperature sensors and controls for the HVAC, appliance, automotive, and electronics industries. With offices in the United States, China, Canada, Mexico, The Netherlands, United Kingdom, Hong Kong, Japan, South America, India and Korea.

Childs Mascari Warner Architects has found a healthy way to build its architecture practice. The firm provides design and planning services for commercial construction projects, focusing on the health care sector. The firm's client roster includes Kaiser Permanente, the Palomar Pomerado Health system, Saint Mary's Health Network, Scripps, and UCSD Medical Center. Childs Mascari Warner Architects has offices in the San Francisco and San Diego metro areas. James Leary founded the firm, then named James Leary Architecture and Planning, in 1989. Following Leary's retirement from the company, the three senior principals acquired ownership and changed the name.

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.

Johnson & Jennings General Contracting provides construction services in the San Diego area. Projects range from corporate office, health care, and retail construction to commercial and industrial facility tenant improvements. Services include project evaluation and consulting, estimating, and construction management. CEO Tom Johnson and president Jackie Jennings co-own the company they founded in 1981.

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