| 21232 | Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying
This industry comprises establishments primarily engaged in operating sand and gravel pits, including dredging for sand and gravel; mining or quarrying shale; and mining, beneficiating or otherwise preparing kaolin or ball clay, including china clay, paper and slip clays, and other clays and refractory minerals. |
| 21239 | Other Non-Metallic Mineral Mining and Quarrying
This industry comprises establishments, not classified to any other industry, primarily engaged in mining, beneficiating or otherwise preparing non-metallic minerals, such as asbestos, gypsum and potash, and extracting peat.
Exclusion(s): Establishments primarily engaged in:
*mining or quarrying dimension stone (21231, Stone Mining and Quarrying); *operating sand and gravel pits and dredging for sand and gravel (21232, Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying); and *mining or quarrying shale and mining, beneficiating, or otherwise preparing clays and refractory minerals (21232, Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying); *the production of phosphoric acid, superphosphates or other manufactured phosphate compounds or chemicals (32531, Fertilizer Manufacturing). |
