| | | 115115 | Farm Labor Contractors
and Crew Leaders | Support Activities for
Crop Production 11511 | Support Activities for
Crop Production 1151 | Support Activities for
Agriculture and Forestry 115 | Agriculture, Forestry,
Fishing and Hunting 11 |
| | | 115116 | Farm Management Services | Support Activities for
Crop Production 11511 | Support Activities for
Crop Production 1151 | Support Activities for
Agriculture and Forestry 115 | Agriculture, Forestry,
Fishing and Hunting 11 |
| | | 115210 | Support Activities for
Animal Production | Support Activities for
Animal Production 11521 | Support Activities for
Animal Production 1152 | Support Activities for
Agriculture and Forestry 115 | Agriculture, Forestry,
Fishing and Hunting 11 |
| | | 115310 | Support Activities for
Forestry | Support Activities for
Forestry 11531 | Support Activities for
Forestry 1153 | Support Activities for
Agriculture and Forestry 115 | Agriculture, Forestry,
Fishing and Hunting 11 |
| | | 211120 | Crude Petroleum
Extraction | Crude Petroleum
Extraction 21112 | Oil and Gas Extraction 2111 | Oil and Gas Extraction 211 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | 211130 | Natural Gas Extraction | Natural Gas Extraction 21113 | Oil and Gas Extraction 2111 | Oil and Gas Extraction 211 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | 212111 | Bituminous Coal and
Lignite Surface Mining | Coal Mining 21211 | Coal Mining 2121 | Mining (except Oil and
Gas) 212 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | 212112 | Bituminous Coal
Underground Mining | Coal Mining 21211 | Coal Mining 2121 | Mining (except Oil and
Gas) 212 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | 212113 | Anthracite Mining | Coal Mining 21211 | Coal Mining 2121 | Mining (except Oil and
Gas) 212 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | 212210 | Iron Ore Mining | Iron Ore Mining 21221 | Metal Ore Mining 2122 | Mining (except Oil and
Gas) 212 | Mining, Quarrying, and
Oil and Gas Extraction 21 |