Bulley & Andrews is in the business of pushing brick and concrete around. The general contractor offers new construction on commercial, industrial, and residential buildings, as well as renovation, historical restoration, and design/build services primarily in the Chicago area. Its projects have included condominiums, banks, hospitals, hotels, offices, places of worship, and schools. Together with its Meyne division, the firm is involved in projects for The University of Chicago, Host Hotels & Resorts, and Countrywide. Stonemason Frederick Bulley and architect Alfred Andrews founded the company in 1891. Fred's grandson, Allan Bulley Jr., is the company's chairman and CEO.

Pizzagalli Construction Company makes its dough by rolling out a portfolio of general contracting, construction management, and design/build services. The group holds a large slice of the water/wastewater treatment and water supply infrastructure market, ranking among the top 15 contractors by Engineering News-Records. It also delivers as a leading builder of semiconductor facilities in the US and works on commercial, health care, industrial, and institutional building projects in about 15 states. Clients have included IBM, IDEXX, and the University of Maine. The employee-owned company has offices in Maine, North Carolina, and Vermont. It is affiliated with real estate developer Pizzagalli Properties, LLC.

Tetra Tech NUS, Inc., provides environmental consulting, engineering, and remediation services. Its expertise extends to such areas as air quality management, compliance services, environmental analysis and planning, health sciences, homeland security, information technology, radioactive and hazardous waste investigation and protection, and water and wastewater treatment. Now part of engineering giant Tetra Tech, the company stemmed from nuclear utility consulting and engineering firm Nuclear Utility Services Corporation (NUS Corporation), which was founded in 1960. Clients, including government agencies and commercial industries, are served through 17 offices across the US.

Petrocelli Electric keeps the city that never sleeps wired. Founded in 1933, the contractor installs and maintains electrical, communications, and lighting systems for commercial, institutional, and public sector clients in the New York City metropolitan area. Its activities include project management, electrical engineering, and design-build services such as developing electrical distribution and communications systems, installing generators and fiber-optic cables, and laying underground feeder cables. In 2009 former owner Santo Petrocelli Sr. pleaded guilty to charges that he made illegal payments to a union official.

Tecogen, Inc. is a leading manufacturer of natural gas engine-driven equipment. The company markets two product lines: TECOCHILL engine-driven chillers in the 25-400 ton size range and 60, 75 and 100 kW TECOGEN cogeneration modules. The new 100kw inverter-based cogeneration unit is UL 1741 certified for "utility-safe" interconnection while also providing seamless power transfer to stand-alone operation in the event of a power outage. Tecogen has an in-house sales staff that manage an independent sales representative network based throughout the United States and the world. Tecogen also has a marketing group, and an extensive service network with service employees in several major metropolitan areas across the United States.

Professional Service Industries, Inc., the company, which is known as PSI, provides testing for lead-based paint and asbestos, among other services. One of the largest engineering and environmental consulting firms in North America, PSI also is one of the leading independent testing organizations. Its services include geotechnical engineering, soil and materials testing, and facilities and roof consulting. The company provides its testing and consulting services to companies involved in site selection, design, construction, and property management. Investment firm Olympus Partners owns a controlling stake in PSI.

Hunter Plastics are based in South East London and employ over 250 people, who are all dedicated to industry leading and award winning customer service. We have built a strong worldwide reputation as a manufacturer of high quality above and below ground products - all manufactured using a quality management system complying with BS EN ISO9001:2008 and BS EN ISO14001:2004 Through manufacturing excellence, Innovations and Synergies, Hunter focuses on ‘added value products' - such as Grease Management and Concealed framed bathroom systems, that enable our stockist and distributors to gain profitable sales in their local markets.

JCM Facilities Planning and Management offers design, architectural, engineering, and related services for corporate, education, government, and health care facilities. The company, a subsidiary of design and construction management firm Heery International, offers construction, move and project management, as well as interior design, and industrial services. JCM Facilities Planning and Management's clients include The Salvation Army, Los Angeles County, Northrop Grumman, Loyola Marymount University, Union Bank of California, and Nikken.

G. A. Johnson & Son, one of the oldest privately held construction companies in the Midwest, constructs commercial, industrial, institutional, and residential buildings throughout the region. It specializes in building food and drug stores including Jewel Osco, Wal-Mart, and Walgreens, which require a contractor that can coordinate mechanical, electrical, refrigeration, and other specialized requirements. The firm provides consulting, general contracting, skilled trade, and engineering services. It also completes its own concrete and carpentry work. Gustav Augustus Johnson, a Swedish immigrant, founded the company in 1874. The company continues to be owned and operated by fifth-generation family members.

Western Summit Constructors, Inc. (WSCI) is a premier environmental contractor, building municipal and industrial water and wastewater facilities and associated pipelines throughout the United States. At nearly thirty years old, we've established a solid reputation as one of the finest in the industry.Originally an offshoot of Western Empire Constructors, Inc., WSCI was formed in 1981 as a separate corporation to handle heavy industrial projects. Today, we operate independently under parent company Kiewit as the Western Summit District.Western Summit's corporate offices are in Denver, Colorado; with additional offices in Atlanta, Georgia; Albuquerque, New Mexico; and two in Texas: Fort Worth and Houston. We have completed projects ranging in size from $400,000 to nearly $190 million.

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