| Naics index | Naics index description |
|---|---|
| 327991 | Monuments and tombstones, cut stone, manufacturing |
| 327991 | Slate products manufacturing |
| 327991 | Statuary, marble, manufacturing |
| 327991 | Table tops, marble, manufacturing |
| 327992 | Barite processing beyond beneficiation |
| 327992 | Barium processing beyond beneficiation |
| 327992 | Blast furnace slag processing |
| 327992 | Desiccants, activated clay, manufacturing |
| 327992 | Diatomaceous earth processing beyond beneficiation |
| 327992 | Feldspar processing beyond beneficiation |