Browse TRAIL Inventories

Effect of energy and impact direction on coal fragmentation

Respirable dust generation :comparison of continuous and conventional mining methods when excavating rock in coal mines

Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life

Evaluation of high-pressure front-mounted water jets for frictional-ignition suppression

Primary gas toxicities and smoke particle characteristics during combustion of mine brattices :development of a test parameter

Evaluation of water-jet-assisted cutting capability on longwall shearers

State mineral summaries.

Crushed stone and sand and gravel production by state districts :1985-1986


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