Search U.S. government technical reports digitized or harvested by TRAIL.
Extracting final stump in pillars and pillar lifts with continuous miners
Survey of face ventilation practices in coal mines
Recommended procedures for mine hoist and shaft installation, inspection, and maintenance
Survey of practices in controlling roof at intersections and junctions in underground coal mines
Escapeways and other emergency measures in coal mines
Equipment, accessories, and procedure for fighting mine fires with high-expansion foam
Float dust deposits in return airways in American coal mines
Survey of burning coal-mine refuse banks
Recommended safety precautions for active coal stockpiling and reclaiming operations