Number of active underground mines by sector and year, 2013 - 2021

Keywords: Mine operators
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Number of active mines
Sector 2013 2014 2015 2016 2017 2018 2019 2020 2021
Coal 496 447 405 341 306 295 285 259 231
Metal 108 96 92 83 80 82 85 87 84
Nonmetal 44 44 44 42 40 40 40 41 39
Stone 111 117 116 116 115 114 110 109 110
Total 759 704 657 582 541 531 520 496 464
Note: Active mines are those mines that reported any employee hours during the year. Data Source: MSHA
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Content source: National Institute for Occupational Safety and Health, Mining Program