Browse TRAIL Inventories

Use of respiratory protective devices under abnormal air pressure

Some information from an investigation on methods of confining cardox blasting devices in boreholes in certain coal mines

Prevention of fires caused by electric arcs and sparks from trolley wires

Ground-resistance measurements of drill-hole casings

Mine rescue life-line telephone assemblies

Procedure used in fighting and sealing a fire in an Ohio coal mine and recovery of the mine by air-locking methods


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