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coal mines and mining
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View Savery project preference right coal lease applications By United States. Bureau of Land Management. Rawlins District 
Savery project preference right coal lease applications
By United States. Bureau of Land Management. Rawlins District
View Reports of the efficiency of various coals 1896 to 1898 By United States. Navy Dept. Bureau of Equipment
Reports of the efficiency of various coals 1896 to 1898
Reports of the efficiency of various coals 1896 to 1898
By United States. Navy Dept. Bureau of Equipment