| 212322 |
Abrasive sand quarrying and/or beneficiating |
| 212322 |
Blast sand quarrying and/or beneficiating |
| 212322 |
Enamel sand quarrying and/or beneficiating |
| 212322 |
Filtration sand quarrying and/or beneficiating |
| 212322 |
Foundry sand quarrying and/or beneficiating |
| 212322 |
Glass sand quarrying and/or beneficiating |
| 212322 |
Grinding sand quarrying and/or beneficiating |
| 212322 |
Industrial sand beneficiating (e.g., screening, washing) |
| 212322 |
Industrial sand sandpits and dredging |
| 212322 |
Molding sand quarrying and/or beneficiating |