Description: This industry comprises establishments primarily engaged in the construction of oil and gas lines, mains, refineries, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to oil and gas pipeline and related structures construction. All structures (including buildings) that are integral parts of oil and gas networks (e.g., storage tanks, pumping stations, and refineries) are included in this industry. Illustrative Examples: Distribution line, gas and oil, construction Oil refinery construction Gas main construction Petrochemical plant construction Gathering line, gas and oil field, construction Natural gas pipeline construction Pumping station, gas and oil transmission, construction Storage tank, natural gas or oil, tank farm or field, construction Natural gas processing plant construction Cross-References. Establishments primarily engaged in--