| CATEGORIES INDEX: 327. NONMETALLIC MINERAL PRODUCT MANUFACTURING |
| 3271. CLAY PRODUCT AND REFRACTORY MANUFACTURING |
| 3272. GLASS AND GLASS PRODUCT MANUFACTURING |
| 3273. CEMENT AND CONCRETE PRODUCT MANUFACTURING |
| 3274. LIME, GYPSUM AND GYPSUM PRODUCT MANUFACTURING |
| 3279. OTHER NONMETALLIC MINERAL PRODUCT MANUFACTURING |