Industry: 1459—Clay, Ceramic, and Refractory Minerals, Not Elsewhere Classified
Establishments primarily engaged in mining, milling, or otherwise preparing clay, ceramic, or refractory minerals, not elsewhere classified. Establishments producing clay in conjunction with the manufacture of refractory or structural clay and pottery products are classified in Manufacturing, Major Group 32.
Fuller's earth mining
Nepheline syenite quarrying
Olivine (nongem) mining
Clays (common) quarrying—not in conjunction with manufacturing
Pegmatite (feldspar) mining
Cornwall stone mining
Plastic fire clay mining
Shale (common) quarrying—not in conjunction with manufacturing
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