Search U.S. government technical reports digitized or harvested by TRAIL.
Investigation of stress distributions in burst-prone coal pillars
Relative pressure changes in coal pillars during extraction :a progress report
Review of Bureau of Mines coal program, 1967
Behavior of coal-gas reservoirs
Design and development of drill equipment
Gas migration characteristics of coalbeds
Methane emission rate studies in a northern West Virginia mine
Review of Bureau of Mines coal program,1969
Coal mine dust standards of the United States and other countries
Methods and costs of coal refuse disposal and reclamation
Mechanical properties and cutting characteristics of coal
Injury experience in coal mining, 1970
Technique to improve fuel extraction for coal seams intersected by oil and gas wells
Coal mine combustion products:neoprenes, polyvinyl chloride compositions, urethane foam, and wood
Chemical analysis of slickensides from coal mine roof shale
Structural analysis of a coal mine opening in elastic, multilayered material
Coal mine combustion products: identification and analysis
Geologic investigations of underground coal mining problems
Use of surface joint and photolinear data for predicting subsurface coal cleat orientation
Determining cleat orientation of deeper coalbeds from overlying coals
Estimating methane content of bituminous coalbeds from adsorption data
Results of research to develop guidelines for mining near surface and underground bodies of water
Dry-process-sprayed coal mine sealants,a progress report
Dry-process-sprayed coal mine sealants,an updated progress report
Improved methods for monitoring production from vertical degasification wells
Probability of encountering coalbed discontinuities during vertical and horizontal borehole drilling
Coal-cutting forces and primary dust generation using radial gage cutters
Overlap probability for short-period-delay detonators used in underground coal mining
Underground coal mine lighting handbook, (in two parts).
Underground coal mine lighting handbook, (in two parts).
Analysis of cutter roof failure induced by clastic dikes in an underground coal mine
A review of the mechanisms of gas outbursts in coal
Coal extraction, transport, and logistics technology for underground mining
Comparative study of pillar load transfer associated with multiple-seam mining
Loading characteristics of pillars in multiple-seam mining operations
Leakage across a bituminous coal mine barrier
Control of diesel particulate matter in underground coal mines
Reducing back injuries in low-coal mines :redesign of materials-handling tasks
Calculation of vertical stress exerted by topographic features
Strength characteristics and air leakage determinations for alternative mine seal designs
New techniques for mining thin-seam mountaintop coal reserves