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Stemming in Metal Mines. Progress Report 2

Description: Report issued by the U.S. Bureau of Mines on the progress made in metal-mine stemming. Different types of stemming methods and testing procedures are presented. This report includes tables, illustrations, and photographs.
Date: August 1940
Creator: Johnson, John A.; Agnew, Wing G. & Mosier, McHenry
open access

Mineral Industries Survey of the United States, California: Tuolumne and Mariposa Counties, Mother Lode District (South). Mines of the Southern Mother Lode Region, Part 2 -- Tuolumne and Mariposa Counties

Description: Report issued by the Bureau of Mines over mining operations in the southern Mother Lode Region of California. A review of this area is presented, and discussed. This report includes tables, illustrations, and photographs.
Date: 1940
Creator: Julihn, C. E. & Horton, F. W.
open access

Fire-Retardant Treatments of Liquid-Oxygen Explosives

Description: From Introduction Present Investigation: "The scope of the investigation was limited to study of the effects of fire-retardant treatments on the resistance to ignition, physical characteristics, and practical hazards of handling the liquid-oxygen explosive prepared from the granular carbonaceous absorbent mentioned, from wrappers of a triple-filled canvas, and from a liquid oxygen of standard high purity."
Date: 1940
Creator: Denues, A. R. T.
open access

Mechanical Shoveling in Underground Metal Mines

Description: From Scope of Bulletin: "The object of the current bulletin is to present recent data on mechanical shoveling in underground metal mines and in selected nonmetal mines. This bulletin supplements the 1924 edition, but the main discussion covers mechanical shoveling only, because most of the new material relates to equipment recently developed, to improved technique in loading, and ti changes in loading practice in certain mining districts."
Date: 1940
Creator: Mosier, McHenry & Steinmesch, J. H.
open access

Coal-Mine Accidents in the United States, 1937

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1940
Creator: Adams, William W.; Geyer, L. E. & Parry, M. G.
open access

Mechanical Concentration of Gases

Description: From Introduction: "This bulletin deals with a new mechanical means of attacking the problem of separation. Although it is improbable that any one type of separation could hope to find universal application, the method described is to be regarded as an alternative to conventional means that has attractive possibilities in certain instances."
Date: 1940
Creator: Maier, C. G.
open access

Quarry Accidents in the United States During the Calendar Year 1938

Description: Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).
Date: 1940
Creator: Adams, William W. & Wrenn, Virginia E.
open access

Safety Factors in Construction and Ventilation, Wawona Vehicular Tunnel, Yosemite National Park, California

Description: Report issued by the Bureau of Mines discussing the safety and ventilation hazards presented during the construction of the Wawona tunnel in Yosemite National Park. Safety precautions and procedures used during the construction are presented. This report includes tables, illustrations, and photographs.
Date: 1940
Creator: Ash, S. H.
open access

Explosion Hazards in Storage-Battery Rooms

Description: Report issued by the Bureau of Mines discussing the safety and explosion hazards present in storage-battery rooms. Descriptions of storage-battery rooms and methods of ventilation are presented. This report includes tables, illustrations, and photographs.
Date: 1940
Creator: Jones, G. W.; Campbell, John; Dillon, R. E. & Benson, O. B.
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