| 2391 |
Manufacture of refractory products |
| 2392 |
Manufacture of clay building materials |
| 2393 |
Manufacture of other porcelain and ceramic products |
| 2394 |
Manufacture of cement, lime and plaster |
| 2395 |
Manufacture of articles of concrete, cement and plaster |
| 2396 |
Cutting, shaping and finishing of stone |
| 2399 |
Manufacture of other non-metallic mineral products n.e.c. |