Search U.S. government technical reports digitized or harvested by TRAIL.
The Ignition of Fire Damp by Explosives: A Study of the Process of Ignition by the Schlieren Method
Small-scale placer-mining methods
Small-scale placer-mining methods
Silver consumption in the arts and industries of the United States in 1930 and 1931
Physical-chemical properties of methane
Milling methods at the Concentrator of the Walker Mining Co., Walkermine, Calif.
Hazards to underground workers from inflammable surface structures near mine openings
The importance of discipline in mine safety
Mining methods and costs at the Braden Copper Co.'s mines, Sewell, Chile
How to prevent death and injury from falls of roof in coal mines
Fuels consumed by the Federal Government during the fiscal year ended June 30, 1930
Good rock-dusting and ventilation practice in two Alabama coal mines
Economic size of metal-mine airways
Mining practice at the Edwards mine of the St. Joseph Lead Co., St. Lawrence County, N.Y.
Shaft-Sinking Practices and Costs
Summarized Data of Tin Production
A study of falls of roof and coal in Northern Colorado
Washability studies of Blue Creek Bed at Connellsville Mine, Connellsville, Ala.
Review of fatalities in the California petroleum industry during the calendar year 1932
Explosive shattering of minerals
Washability studies of Mary Lee Bed at Powhatan Mine, Powhatan, Ala.
Washability studies of coal from the Mary Lee Bed at the Bankhead Mine, Bankhead, Ala.
A study of falls of roof and coal, Rock Springs Coal District, Sweetwater County, Wyo.
A study of "bottom-hole" samples of East Texas crude oil
Investigations during 1932 of combustibles in manholes in Boston, Mass.
Consumption trends in the roofing-slate industry
The cleaning of fine coal from the Mary Lee Bed at the Porter Mine
Identification of cerussite and anglesite, and flotation with galena
Comparison of methods for determining friability of coal
Safety at petroleum cracking plants
Silicosis and tuberculosis among miners of the tri-state district of Oklahoma, Kansas and Missouri.
A study of the properties of Texas-New Mexico polyhalite pertaining to the extraction of potash.
Method and cost of quarrying limestone at the plant of the Calaveras Cement Co., San Andreas, Calif.
Growth and development of nonmetallic mineral industries
Some notes on methods and costs of equipping and developing prospects