NAICS Code Lookup
Dimension Stone Mining and Quarrying
General
Phraseology
Description
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 Codes | NAICS Description | |
---|---|---|
212311 | Dimension Stone Mining and Quarrying | |
212312 | Crushed and Broken Limestone Mining and Quarrying | |
212313 | Crushed and Broken Granite Mining and Quarrying | |
212319 | Other Crushed and Broken Stone Mining and Quarrying | |
212321 | Construction Sand and Gravel Mining | |
212322 | Industrial Sand Mining | |
212324 | Kaolin and Ball Clay Mining | |
212325 | Clay and Ceramic and Refractory Minerals Mining | |
212391 | Potash, Soda, and Borate Mineral Mining | |
212392 | Phosphate Rock Mining | |
212393 | Other Chemical and Fertilizer Mineral Mining | |
212399 | All Other Nonmetallic Mineral Mining | |
Nothing found! |