Search U.S. government technical reports digitized or harvested by TRAIL.
Underground loading devices in metal mines
Conditions in the feldspar industry
List of permissible mine equipment
List of permissible mining equipment
An automatic electric man-hoist for slopes or inclines
Some notes on underground transportation in metal mines
List of permissible mine equipment
List of permissible mine equipment
Compressed air for operating modern coal-mining equipment
List of permissible mine equipment
List of permissible mine equipment
Aerial tramways in the metal-mining industry.
List of permissible mine equipment approved during 1937
Aerial tramways in the metal-mining industry :construction and operating costs
Possible hazards attending the use of engines operated on butane fuel in mining and tunneling
Permissible mine equipment approved during 1944
Use of scrapers and other light earth-moving equipment in bituminous-coal strip mining
Diesel equipment in underground mining
Performance of a diesel mine locomotive
Summary of published information on large-capacity compressed-air receivers for underground mines
A hydraulic-powered platform for scaling high backs and walls
Permissible mining-loading equipment
Zinc-ore mining and milling methods, Piquette Mining and Milling Co., Tennyson, Wis.
Permissible mine equipment approved during 1957-58
Factors influencing the design of hydraulic backfill systems (in two parts).
Factors influencing the design of hydraulic backfill systems (in two parts).
Mobile diesel-powered equipment for noncoal mines approved by the Bureau of Mines, 1951-62
Nonuniform radial loads applied to the boundary of a circular hole in an infinite plate
Tunnel boring technology :disk cutter experiments in sedimentary and metamorphic rocks
Tunneling machine research :development of an experimental full-scale research rock cutting device
Tunneling machine research :interaction between disk-cutter grooves in rocks
Tunnel boring technology:disk cutter experiments in metamorphic and igneous rocks
Tunneling machine research :size distribution of rock fragments produced by rolling disk cutters
Overcoring equipment and techniques used in rock stress determination
Drillability determination :a drillability index for percussion drills
Mine power systems research(in four parts) :