Investigation of Manganese Deposits in the Philipsburg Mining District, Granite County, Montana (open access)

Investigation of Manganese Deposits in the Philipsburg Mining District, Granite County, Montana

Report issued by the U.S. Bureau of Mines on the manganese deposits near Granite County, Montana. It reviews the mining history and geology of the Philipsburg district. The report includes maps and tables.
Date: October 1950
Creator: Lorain, S. H.
System: The UNT Digital Library
Estimate of Known Recoverable Reserves of Coking Coal in Cambria County, Pennsylvania (open access)

Estimate of Known Recoverable Reserves of Coking Coal in Cambria County, Pennsylvania

Report issued by the U.S. Bureau of Mines on estimates of known deposits of coking coal in Cambria County, Pennsylvania. Studies on the properties of coal and coal blends from the area are presented. The report includes maps and tables.
Date: October 1950
Creator: Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Cooper, H. M.; Abernethy, R. F.; Reynolds, D. A. et al.
System: The UNT Digital Library
Some Innovations in Equipment For Scaling High Roofs and Mine Walls (open access)

Some Innovations in Equipment For Scaling High Roofs and Mine Walls

Report issued by the U.S. Bureau of Mines describing the methods and equipment developed at the oil-shale mine near Rifle, Colorado. This report includes photographs and illustrations documenting this equipment.
Date: October 1950
Creator: Brown, Brinton C.; Wright, Fred D. & Ballinger, Homer J.
System: The UNT Digital Library