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usgs.gov

National Minerals Information Center — USGS

Statistics and information on the worldwide supply, demand, and flow of minerals and materials essential to the U.S. economy and security.

Open sourceCrawled 2026-08-12

Dewey Decimal

84%
  1. 300 Social sciences
  2. 330 Economics
  3. 338 Production

NAICS

93%
  1. 21 Mining, Quarrying, and Oil and Gas Extraction
  2. 212 Mining (except Oil and Gas)