This U.S. industry comprises establishments primarily engaged in manufacturing nonmetallic mineral products (except pottery, ceramics, and plumbing fixtures; clay building materials and refractories; glass and glass products; cement; ready-mix concrete; concrete products; lime; gypsum products; abrasive products; cut stone and stone products; ground and treated minerals and earth; and mineral wool). Illustrative Examples: Dry mix concrete manufacturing Mica products manufacturing Manmade and engineered proppants (e.g., resin-coated sand, ceramic materials) manufacturing Stucco and stucco products manufacturing Synthetic stones, for gem stones and industrial use, manufacturing Cross-References. Establishments primarily engaged in--