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Quarry Accidents in the United States During the Calendar Year 1919
Technical paper issued by the Bureau of Mines over quarry accidents reported during the year of 1919. The results of the accident reports collected are presented and discussed. This paper includes tables.
Date:
1921
Creator:
Adams, William W.
System:
The UNT Digital Library
Gas Masks for Gases Met in Fighting Fires
Technical paper issued by the Bureau of Mines over the development of gas masks designed for fighting fires. The characteristics of the different types of masks in development are presented. This paper includes tables, illustrations, and photographs.
Date:
August 1921
Creator:
Fieldner, Arno Carl; Katz, Sidney H. & Kinney, Selwyne P.
System:
The UNT Digital Library