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
Studies of roof movement in coal mines.
Characteristics of fuel pitches and their explosibility in pulverized form
Use of wetting agents for allaying coal dust in mines
Methods of sampling and analyzing coal-mine dusts for incombustible content
A study of timber decay in the Crucible Mine of the Crucible Fuel Co.
Studies of roof movement in coal mines.
Progress report :experiments on strength of small pillars of coal in the Pittsburgh bed