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Utah--Coal--Research.
Utah--Coal miners.
Utah--Coal--Analysis.
Utah--Coal mine accidents.
Coal mines and mining--Law and legislation--Utah.
Series 1283, Inspector of Coal and Hydrocarbon Mines Correspondence, 1898-1916.
Series 23008, Inspector of Coal and Hydrocarbon Mines Reports, 1898-1904; 1914-1916.
Series 23009, Inspector of Coal and Hydrocarbon Mines Letter books, 1896-1915.
Series 23010, Inspector of Coal and Hydrocarbon Mines Administrative records, 1898-1915.
Series 83919, Inspector of Coal and Hydrocarbon Mines Biennial reports, 1896-1916.
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Coal mines and mining--Labor productivity--Utah.
Coal mines and mining--Safety measures--Utah.
Utah--Coal--Transportation.
Utah--Coal trade.
Coal mine accidents--Utah.