Date: December 1942
Creator: Johnson, John A.
Description: Report issued by the U.S. Bureau of Mines on the experiments conducted on stemming in metal-mines. As stated in the introduction, "its purpose is to compare the amount of dust and gases produced as a result of blasting charges of dynamite (1) in drill holes, (2) in bombs, and (3) in mud-cap or adobe shots" (p. 1). Dust and gas concentrations gathered from the experiments are listed. This report includes tables.
Contributing Partner: UNT Libraries Government Documents Department