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| Cianbro Corp. Cianbro is one of the East Coast’s largest civil and heavy industrial construction companies-headquartered in Pittsfield, Maine.
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Bechtel Group Inc. Engineering, construction, management, development, and financing services worldwide.
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Michels Brownville, Wisconsin company produces aggregates. Services in tunnel and underground utility construction.
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O & G Industries Inc. Diversified Construction Services Company headquartered in Torrington, Connecticut.
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C.H. Guernsey & Co. Oklahoma firm provides engineering, architectural and consulting services to energy industry clients around the world.
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Graycor Constructs commercial, industrial, healthcare and institutional facilities. Headquarters in Chicago.
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Clark Construction Co. Builds commercial buildings, schools, correctional facilities, manufacturing facilities and power plants. Main office in Lansing, Michigan.
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Energy Power Systems Ltd. Energy Power Systems Limited (EPS) is an integrated Independent Power Project Developer, an Oil & Gas Exploration and Development Company and a Contractor of Infrastructure Projects.
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J.A. Jones Inc. Global provider of construction services, development, contracting, operational, and environmental services.
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