Search U.S. government technical reports digitized or harvested by TRAIL.
Reduction Mills in Montana in 1925
Practical Underground Education of the Coal Miner
Coal-Mine Fatalities in the United States, 1926
Metal-Mine Accidents in the United States During the Calendar Year 1925
Quarry Accidents in the United States During the Calendar Year 1925
Technology and Uses of Silica and Sand
Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania
Regulations and Inspection Prevent Accidents from Falls of Roof
The Manganese Situation from a Domestic Standpoint
Fifty-Nine Coal-Mine Fires: How They Were Fought and What They Teach
Drilling and Blasting in Open-Cut Copper Mines
Petroleum Refinery Statistics, 1926
Magnetic Concentration of Iron Ores of Alabama
Petroleum Refinery Statistics, 1916-1925
Safeguarding Workmen at Oil Derricks
Resistance of Metal-Mine Airways
Problems in the Firing of Refractories
Quarry Problems in the Lime Industry
Potash Mining in Germany and France
Placer-Mining Methods and Costs in Alaska
Fluorspar: Its Mining, Milling, and Utilization with a Chapter on Cryolite
Subsidence Due to Coal Mining in Illinois
Gases from Blasting in Tunnels and Metal-Mine Drifts
Acid Processes for the Extraction of Alumina
Petroleum refineries in the United States, January 1, 1928
Natural-gasoline plants in the United States
Accident-prevention work of the Midwest Refining Co.
Safeguarding electrical equipment used in gassy mines :European practice
Propagation of flame in mixtures of natural gas and air
Utilization and Prevention of Molybdenum Waste in Oxidized Lead Ore Treatment
Preliminary ore dressing tests to recover manganese in rhodochrosite ores.
Analyses of West Virginia coals
Development and safety of the storage-battery locomotive
Prevention of pipe-tool accidents at drilling and producing wells,
State laws relating to coal-mine timbering
The sulphur problem in burning coal
A system of analysis for oil-field waters
Prevention of accidents with explosives in the tri-state zinc and lead ore producing district
Hazards in connection with concentrated coal mining
Fires and fire prevention in Lake Superior mines
Survey of cracking plants, January 1, 1928
Railroad fuel oil consumption in 1927
Are flame safety lamps suitable for detecting petroleum vapors?
Bentonite :its properties, mining, preparation, and utilization
Production of explosives in the United States :during the calendar year 1927
A study of the less volatile oils in Salt Creek (Wyo.) crude