| 2121 |
2 |
Coal Mining |
— |
| 2122 |
4 |
Metal Ore Mining |
This industry group comprises establishments primarily engaged in developing mine sites or mining metallic minerals, and establishments primarily engaged in ore dressing and beneficiating (i.e., preparing) operations, such as crushing, grinding, washing, drying, sintering, concentrating, calcining, and leaching. Beneficiating may be performed at mills operated in conjunction with the mines served or at mills, such as custom mills, operated separately. |
| 2123 |
8 |
Nonmetallic Mineral Mining and Quarrying |
This industry group comprises establishments primarily engaged in developing mine sites, or in mining or quarrying nonmetallic minerals (except fuels). Also included are certain well and brine operations, and preparation plants primarily engaged in beneficiating (e.g., crushing, grinding, washing, and concentrating) nonmetallic minerals. |
| 2131 |
5 |
Support Activities for Mining |
— |
| 2211 |
10 |
Electric Power Generation, Transmission and Distribution |
This industry group comprises establishments primarily engaged in generating, transmitting, and/or distributing electric power. Establishments in this industry group may perform one or more of the following activities: (1) operate generation facilities that produce electric energy; (2) operate transmission systems that convey the electricity from the generation facility to the distribution system; and (3) operate distribution systems that convey electric power received from the generation facility or the transmission system to the final consumer. |
| 2212 |
1 |
Natural Gas Distribution |
— |
| 2213 |
3 |
Water, Sewage and Other Systems |
This industry group comprises establishments primarily engaged in: (1) operating water treatment plants and/or water supply systems; (2) operating sewer systems or sewage treatment facilities; or (3) providing steam, heated air, or cooled air. |
| 2361 |
4 |
Residential Building Construction |
— |
| 2362 |
2 |
Nonresidential Building Construction |
This industry group comprises establishments primarily responsible for the construction (including new work, additions, alterations, maintenance, and repairs) of nonresidential buildings. This industry group includes nonresidential general contractors, nonresidential for-sale builders, nonresidential design-build firms, and nonresidential project construction management firms. |
| 2371 |
3 |
Utility System Construction |
This industry group comprises establishments primarily engaged in the construction of distribution lines and related buildings and structures for utilities (i.e., water, sewer, petroleum, gas, power, and communication). All structures (including buildings) that are integral parts of utility systems (e.g., storage tanks, pumping stations, power plants, and refineries) are included in this industry group. |