Industry Analysis

3271 Clay Product and Refractory Manufacturing
Comprises establishments primarily engaged in (1) shaping, molding, glazing, and firing pottery, ceramics, and plumbing fixtures, and electrical supplies made entirely or partly of clay or other ceramic materials or (2) shaping, molding, baking, burning, or hardening clay refractories, nonclay refractories, ceramic tile, structural clay tile, brick, and other structural clay building materials.

3272 Glass and Glass Product Manufacturing
Comprises establishments primarily engaged in manufacturing glass and/or glass products. Establishments in this industry may manufacture glass and/or glass products by melting silica sand or cullet, or from purchased glass.

3273 Cement and Concrete Product Manufacturing
Comprises establishments primarily engaged in one of the following: (1) manufacturing portland, natural, masonry, pozzolanic, and other hydraulic cements; (2) acting as batch or mixing plants, manufacturing concrete delivered to a purchaser in a plastic and unhardened state; (3) manufacturing concrete pipe, brick, and block; or (4) manufacturing other concrete products (except block, brick, and pipe).

3274 Lime and Gypsum Product Manufacturing
Comprises establishments primarily engaged in (1) manufacturing lime from calcitic limestone, dolomitic limestone, or other calcareous materials or (2) manufacturing gypsum products.

3279 Other Nonmetallic Mineral Product Manufacturing
Comprises establishments manufacturing nonmetallic mineral products (except clay products, refractory products, glass products, cement and concrete products, lime, and gypsum products).