| 237110 |
Drilling oil and gas field water intake wells--are classified in U.S. Industry 213111, Drilling Oil and Gas Wells |
| 237110 |
Installing and maintaining water and sewer lines performed by water and sewage utilities companies--are classified in Industry Group 2213, Water, Sewage and Other Systems. |
| 237120 |
Building chemical plants (except petrochemical) and similar process or batch facilities--are classified in Industry 236210, Industrial Building Construction |
| 237120 |
Oil well rig building, repairing, and dismantling, on a contract basis--are classified in U.S. Industry 213112, Support Activities for Oil and Gas Operations |
| 237120 |
Inspecting pipelines (i.e., visual)--are classified in Industry 541990, All Other Professional, Scientific, and Technical Services |
| 237120 |
Installing and maintaining natural gas distribution lines performed by natural gas utility companies--are classified in Subsector 221, Utilities |
| 237120 |
Mining machinery and equipment repair and maintenance--are classified in Industry 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance |
| 237120 |
Manufacturing floating oil and gas drilling and production platforms--are classified in U.S. Industry 336611, Ship Building and Repairing. |
| 237130 |
Constructing hydroelectric generating facilities--are classified in Industry 237990, Other Heavy and Civil Engineering Construction |
| 237130 |
Constructing broadcast studios and similar nonresidential buildings--are classified in Industry 236220, Commercial and Institutional Building Construction |