Search U.S. government technical reports digitized or harvested by TRAIL.
Tests of salt as a substitute for rock dust in the prevention of coal-dust explosions in mines
Progress report :experiments on strength of small pillars of coal in the Pittsburgh bed
Effect of changes in moisture and temperature on mine roof.
Use of salts to allay dust on shuttle-car roadways in coal mines
Effect of relief vents on reduction of pressures developed by dust explosions