Browse TRAIL Inventories

Use of sonic techniques in exploring coal-mine roof strata :a progress report

Costs of mining under bolted roof and timbered roof in bituminous coal mines

Hydraulic coal mining research :equipment and preliminary tests

Test operation of a pneumatic vibrating-blade planer in phosphate and coal :a progress report on planer-mining research, 1958-60

Proposed standardization of coal mine examination records

Development of a hydraulic device for measuring relative pressure changes in coal during mining :a progress report

Sealing a coal-mine passageway through a borehole :a progress report

Stoppings for ventilating coal mines

Ignition and control of burning of coal mine refuse

Review of Bureau of Mines coal program,1965

Face ventilation in underground bituminous coal mines :performance characteristics of common jute line brattice

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


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