| 327215 |
Tempered glass made from purchased glass |
| 327215 |
Vacuum tube blanks, glass, made from purchased glass |
| 327215 |
Vases, glass, made from purchased glass |
| 327215 |
Watch crystals made from purchased glass |
| 327310 |
Cement (e.g., hydraulic, masonry, Portland, pozzolana) manufacturing |
| 327310 |
Cement clinker manufacturing |
| 327310 |
Natural (i.e., calcined earth) cement manufacturing |
| 327320 |
Central-mixed concrete manufacturing |
| 327320 |
Concrete batch plants (including temporary) |
| 327320 |
Ready-mix concrete manufacturing and distributing |