This industry comprises establishments primarily engaged in the merchant wholesale distribution of coal, coke, metal ores, and/or nonmetallic minerals (except precious and semiprecious stones and minerals used in construction, such as sand and gravel).
Merchant wholesale distribution of nonmetallic minerals used in construction, such as sand and gravel--are classified in Industry 423320, Brick, Stone, and Related Construction Material Merchant Wholesalers; Merchant wholesale distribution of industrial sand--are classified in Industry 423840, Industrial Supplies Merchant Wholesalers; Merchant wholesale distribution of crude petroleum--are classified in Industry Group 4247, Petroleum and Petroleum Products Merchant Wholesalers; Merchant wholesale distribution of precious and semiprecious stones and metals--are classified in Industry 423940, Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers; and Quarrying, dredging, and/or beneficiating construction sand and gravel--are classified in U.S. Industry 212321, Construction Sand and Gravel Mining.