Search U.S. government technical reports digitized or harvested by TRAIL.
Dynamites :their propulsive strength, rate of detonation, and poisonous gases evolved
Coal-dust explosions in mines :causes, effects, and recommendations for prevention
Centrifugal concentration :its theory, mechanical development and experimental results
The relation of table feed preparation to table efficiency
Experiments on mine-fan performance
Historical summary of gold, silver, copper, lead, and zinc produced in California, 1848 to 1926
Economics of new sand and gravel developments
Strontium from a domestic standpoint
Physiological factors of mine ventilation
Mining laws of Portuguese Possessions
Gypsum :its uses and preparation
Coal-dust explosibility factors indicated by experimental mine investigations 1911 to 1929
Depth attainable by electrical methods in applied geophysics
Effect of manganese on distribution of carbon in steel
Safety at natural-gasoline plants
Leaching silver in unroasted tailings with ferric salts in saturated brine
Electrical motored equipment :approvals and extensions
Electrical accident prevention
The National Safety Competition to assist in the reduction of mine and quarry accidents
What do we know about the explosibility of coal dust in mines?
Activities of the Holmes Safety Association in Florida
Survey of cracking plants, January 1, 1929
Sampling dust in of rock-dusted mines
The unusually good safety record of a coal mine and of a coal-mine foreman
Safeguarding electrical equipment used in gassy mines :European practice.
Work of the Holmes Safety Association in the state of Washington
Recommendation for safety in coal mining relating to placing mine haulage in intake air
Selected bibliography of minerals and their identification
Explosions and other accidents from mudcapped shots in coal mines
Effect of a bonus on the accident record of the Southwestern Portland Cement Co.
Design and operation of gas-well siphons
Accidents at metallurgical works in the United States :during the calendar year 1927
Classification and tabling of difficult ores :with particular attention to fluorspar
Factors governing removal of soluble copper from leached ores
Coke-oven accidents in the United States :during the calendar year 1927
Geophysical investigations at Caribou, Colo.
Roasting of lead-carbonate ores preliminary to gravity concentration
Falls of roof in bituminous coal mines :influence of the seasons and rate of production