Browse TRAIL Inventories

Coal-mine mechanization and accident-frequency rates of hand and mechanical loading in Illinois

Marketing of salt

Marketing talc, pyrophyllite, and ground soapstone

Some signaling systems in metal-mine shafts

Graphic survey of the lime industry, 1910-38 :changes in the number of companies, plants, and kilns, and in their output and capacity

Investigation of electrical equipment, safety lamps, and gas detectors for safety

Mining and milling methods and costs at the Black Hills Tin Co., Tinton, S. Dak.

Reconnaissance of placer-mining districts in Lemhi County, Idaho

Formation, collection, and treatment of coal dust in mines

Saving gold by means of corduroy

Petroleum refineries, including cracking plants, in the United States, January 1, 1939

Coal-mine explosions and coal- and metal-mine fires in the United States during the fiscal year ended June 30, 1939

Some fundamentals of smoke abatement

Testing and design of respiratory protective devices

Strategic minerals investigations :procedure followed by the Bureau of Mines


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