| | | | 21232 | Sand, Gravel, Clay, and
Ceramic and Refractory
Minerals Mining and
Quarrying | Nonmetallic Mineral
Mining and Quarrying 2123 | | | | Mining (except Oil and
Gas) 212 |
| | | | 21239 | Other Nonmetallic Mineral
Mining and Quarrying | Nonmetallic Mineral
Mining and Quarrying 2123 | | | | Mining (except Oil and
Gas) 212 |
| | | | 21311 | Support Activities for
Mining | Support Activities for
Mining 2131 | | | | Support Activities for
Mining 213 |
| | | | 22111 | Electric Power Generation
| Electric Power
Generation, Transmission
and Distribution 2211 | Y | Y | | Utilities 221 |
| | | | 22112 | Electric Power
Transmission, Control,
and Distribution | Electric Power
Generation, Transmission
and Distribution 2211 | Y | Y | | Utilities 221 |
| | | | 22121 | Natural Gas Distribution | Natural Gas Distribution 2212 | | | | Utilities 221 |
| | | | 22131 | Water Supply and
Irrigation Systems | Water, Sewage and Other
Systems 2213 | | | | Utilities 221 |
| | | | 22132 | Sewage Treatment
Facilities | Water, Sewage and Other
Systems 2213 | | | | Utilities 221 |
| | | | 22133 | Steam and
Air-Conditioning Supply | Water, Sewage and Other
Systems 2213 | | | | Utilities 221 |
| | | | 23611 | Residential Building
Construction | Residential Building
Construction 2361 | | | | Construction of Buildings 236 |
