Explosibility of Coal Dust, from Four Mines in Utah, by H. P. Greenwald
Characteristics of Fuel Pitches and Their Explosibility in Pulverized Form, by Irving Hartmann, H. C. Howarth and H. P. Greenwald...
Department of Commerce. Bureau of Mines. Coal-mine Ventilation Factors, by H. P. Greenwald and G. E. MacElroy
Laboratory Testing of the Inflammability of Coal and Other Dusts Conducted by the Bureau of Mines, by H. P. Greenwald with Foreword by George S. Rice
Experiments on Strength of Small Pillars of Coal in the Pittsburgh Bed, by H. P. Greenwald, H. C. Howarth and Irving Hartmann
Coal-dust Explosion Test in the Experimental Mine, 1919 to 1924 Inclusive, by George S. Rice, J. W. Paul, and H. P. Greenwald
Tests on the Ignition of Natural Gas-air Mixtures by Permissible Explosives in the Experimental Coal Mines, by H. P. Greenwald, H. C. Howarth, John Nagy and Irving Hartmann
Explosion Tests of Pittsburgh Coal Dust in the Experimental Mine 1925 to 1932 Inclusive, by George S. Rice, H. P. Greenwald and H. C. Howarth
A Study of Timber Decay in the Crucible Mine of the Crucible Fuel Co
The Effectiveness of Different-size Rock Dusts in Preventing Coal-dust Explosions in Mines
Proceedings
Some Experiments on the Initiation of Coal-dust Explosions by Gas Explosions
Coal-dust Explosions in Mines Caused by Direct Electrical Ignition
Coal dust explosions
Notes on Testing the Explosibility of Coal Dusts and a Proposal to Have an International Test Method
EXPERIMENTS TO DETERMINE THE MINIMUM AMOUNT OF COAL-DUST REQUIRED FOR PROPAGATION OF A MINE EXPLOSION.
COMPRESSION TESTS OF ROOF-SALT SLABS SUPPORTED BY POTASH SALT PILLARS.
Crucible Mine of the Crucible Fuel Company
Tests of the Strength of Concrete Stoppings Designed to Resist the Pressure of Explosions in Coal Mines
Explosibility of Semianthracite, Low-volatile Bituminous-coal, and Medium Volatile Bituminous-coal Dusts