37
Construction, maintenance and/or repair services on a custom basis for structures, buildings, operating facilities, processing facilities, wells, laboratories, pilot plants and equipment for the aerospace, automotive, biotechnology, chemical, general commercial, electrical power generating, electronics, environmental, manufacturing, material processing, natural gas, nuclear energy, offshore petroleum, petrochemical, petroleum, pharmaceutical, plastics, pulp/paper telecommunication, thermal energy and transportation industries
42
Architectural and engineering services on a custom basis for the design of structures, buildings, operating facilities, processing facilities, wells, laboratories, pilot plants and equipment, and related structures for the aerospace, automotive, biotechnology, chemical, electrical power generating, electronics, environmental, general commercial, manufacturing, material processing, natural gas, nuclear energy, offshore petroleum, petrochemical, petroleum, pharmaceutical, plastics, pulp/paper, telecommunication, thermal energy and transportation industries