| 327992 |
Pyrophyllite processing beyond beneficiation |
| 327992 |
Shale, expanded, manufacturing |
| 327992 |
Silicon, ultra high purity, manufacturing |
| 327992 |
Soapstone processing beyond beneficiation |
| 327992 |
Talc processing beyond beneficiation |
| 327992 |
Vermiculite, exfoliated, manufacturing |
| 327993 |
Fiberglass insulation products manufacturing |
| 327993 |
Insulating batts, fills, or blankets, fiberglass, manufacturing |
| 327993 |
Mineral wool insulation materials manufacturing |
| 327993 |
Mineral wool products (e.g., board, insulation, tile) manufacturing |