NAICS Code Lookup

Dimension Stone Mining and Quarrying




Nonmetallic Mineral Mining and Quarrying


This industry group comprises establishments primarily engaged in developing mine sites, or in mining or quarrying nonmetallic minerals (except fuels). Also included are certain well and brine operations, and preparation plants primarily engaged in beneficiating (e.g., crushing, grinding, washing, and concentrating) nonmetallic minerals.

Beneficiation is the process whereby the extracted material is reduced to particles which can be separated into mineral and waste, the former suitable for further processing or direct use. The operations that take place in beneficiation are primarily mechanical, such as grinding, washing, magnetic separation, and centrifugal separation. In contrast, manufacturing operations primarily use chemical and electrochemical processes, such as electrolysis and distillation. However, some treatments, such as heat treatments, take place in both the beneficiation and the manufacturing (i.e., smelting/refining) stages. The range of preparation activities varies by mineral and the purity of any given ore deposit. While some minerals, such as petroleum and natural gas, require little or no preparation, others are washed and screened, while yet others, such as gold and silver, can be transformed into bullion before leaving the mine site.

NAICS CodesNAICS Description
212311Dimension Stone Mining and Quarrying
212312Crushed and Broken Limestone Mining and Quarrying
212313Crushed and Broken Granite Mining and Quarrying
212319Other Crushed and Broken Stone Mining and Quarrying
212321Construction Sand and Gravel Mining
212322Industrial Sand Mining
212324Kaolin and Ball Clay Mining
212325Clay and Ceramic and Refractory Minerals Mining
212391Potash, Soda, and Borate Mineral Mining
212392Phosphate Rock Mining
212393Other Chemical and Fertilizer Mineral Mining
212399All Other Nonmetallic Mineral Mining
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