37 Construction services in the oil and gas industry, namely, construction of compressor stations, amine/CO2 plants, metering stations, saltwater disposal plants, gathering and pump stations, plant modifications and remodels, and condensate stabilizers, all solely in the oil and gas industry; Construction, maintenance, and construction project management services in oil and gas fields; Technical consulting related to the installation of oil and gas equipment, oil and gas control systems, and oil and gas machinery; Pipeline construction, installation, repair, and maintenance