Source and References
US Census Bureau, 2007 and 2012 Economic Census, Geographic Area Series: Mining
Data in this infographic include only establishments with paid employees. All figures are not adjusted for inflation, and do not reflect changes in prices. For information on how the Economic Census is conducted, see the Survey Methodology (www.census.gov/econ/census/help/methodology_disclosure/). For more information on the Economic Census reports (including a release schedule and information on comparability see business.census.gov (www.census.gov/econ/census/).