TRIGON/KLEINFELDER

WOLSELEY INDUSTRIAL GROUP, A FERGUSON ENTERPRISE

Sewage Treatment Facilities, Testing Laboratories

Sewage Treatment Facilities, Steam and Air-Conditioning Supply, Industrial Building Construction, Water and Sewer Line and Related Structures Construction, Oil and Gas Pipeline and Related Structures Construction

Other Electric Power Generation, New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders, Industrial Building Construction, Commercial and Institutional Building Construction

Fluid Power Valve and Hose Fitting Manufacturing, Fluid Power Pump and Motor Manufacturing

Steam and Air-Conditioning Supply, Power and Communication Line and Related Structures Construction, Other Heavy and Civil Engineering Construction, Poured Concrete Foundation and Structure Contractors, Structural Steel and Precast Concrete Contractors

Water Purification

Fossil Fuel Electric Power Generation, Semiconductor and Related Device Manufacturing, Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing, Motor and Generator Manufacturing, All Other Miscellaneous Electrical Equipment and Component Manufacturing

Steam and Air-Conditioning Supply, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipmen, Air and Gas Compressor Manufacturing, Industrial Supplies Merchant Wholesalers, Other Direct Selling Establishments

Water Supply and Irrigation Systems, Sewage Treatment Facilities, Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction

aIR fILTERS, fILTRATION PRODUCTS, WATER FILTERS, DUST COLLECTION, HYDRAULIC FILTERS

Other Electric Power Generation

Crude Petroleum and Natural Gas Extraction, Drilling Oil and Gas Wells, Support Activities for Oil and Gas Operations, Support Activities for Coal Mining, Hydroelectric Power Generation

Water Supply and Irrigation Systems, Sewage Treatment Facilities, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Other Building Equipment Contractors

Other Electric Power Generation, All Other Plastics Product Manufacturing, All Other Miscellaneous Manufacturing, Roofing, Siding, and Insulation Material Merchant Wholesalers

Grading, Paving

Other Electric Power Generation, Commercial and Institutional Building Construction, Power and Communication Line and Related Structures Construction, Roofing Contractors, Plumbing, Heating, and Air-Conditioning Contractors