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Standard Industrial Classifications Codes (SIC Codes) /
North American Industry Classification System (NAICS)

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2121Coal Mining
This industry group comprises establishments primarily engaged in mining bituminous coal, anthracite and lignite by underground mining, and auger mining, strip mining, culm bank mining and other surface mining. Mining operations and preparation plants (also known as cleaning plants and washeries), whether or not such plants are operated in conjunction with mine sites, are included.

2122Metal Ore Mining
This industry group comprises establishments primarily engaged in mining metallic minerals (ores). Also included are establishments engaged in ore dressing and beneficiating operations, whether performed at mills operated in conjunction with the mines served or at mills, such as custom mills, operated separately. These include mills that crush, grind, wash, dry, sinter, calcine or leach ore, or perform gravity separation or flotation operations.

2123Non-Metallic Mineral Mining and Quarrying
This industry group comprises establishments primarily engaged in mining or quarrying non-metallic minerals, except coal. Primary preparation plants, such as those engaged in crushing, grinding and washing, are included.

Exclusion(s): Establishments primarily engaged in:

*manufacturing brick and other structural clay products (32712, Clay Building Material and Refractory Manufacturing); *manufacturing cement (32731, Cement Manufacturing); *manufacturing lime (32741, Lime Manufacturing); and *cutting and finishing stone and stone products (32799, All Other Non-Metallic Mineral Product Manufacturing).



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