This industry comprises establishments primarily engaged in developing the mine site, mining, and/or milling or otherwise beneficiating (i.e., preparing) nonmetallic minerals (except coal, stone, sand, gravel, clay, ceramic, and refractory minerals). Illustrative Examples: Barite mining and/or beneficiating Phosphate rock mining and/or beneficiating Borate, natural, mining and/or beneficiating Potash mining and/or beneficiating Peat mining and/or beneficiating Rock salt mining and/or beneficiating Cross-References. Establishments primarily engaged in--