NAICS Code 21 Companies ... NAICS Code 213 Companies ... NAICS Code 2131 Companies ... NAICS Code 21311 Companies ... NAICS Code 213113 Companies
Support Activities for Coal Mining
This U.S. industry comprises establishments primarily engaged in providing support activities for coal mining (except geophysical surveying and mapping, site preparation, construction, and transportation activities) on a contract or fee basis. Exploration for coal is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites.
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