UNT Libraries Government Documents Department - 204 Matching Results

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Development, Mining, and Handling of Ore in Folded and Faulted Areas, Red Iron Mines, Birmingham District, Alabama

Description: Technical paper issued by the Bureau of Mines over mining of red iron ores in Birmingham, Alabama. As stated in the introduction, "the present paper deals more specifically with the development and handling of ore as affected by folds and faults in the ore bed, and considers changes that may be desirable or necessary in future mining practices" (p. 2). This paper includes illustrations, and photographs.
Date: 1927
Creator: Crane, W. R.

Drilling and Blasting in Open-Cut Copper Mines

Description: From Introduction: "The drilling and blasting practices described in this bulletin are chiefly those in use at the time of these visits. Information, obtained by correspondence, on recent changes at certain mines is also included. The bulletin is confined to descriptions and comparisons of drilling and blasting methods at the six open-cut mines."
Date: 1927
Creator: Gardner, E. D.

Electric Brass Furnace Practice

Description: Report discussing 1) the pertinent information available on what electric furnaces can do to assist prospective users in selecting a furnace that fits their requirements and 2) the gradual evolution of the present commercial types of electric furnaces. Also discusses some of the fundamental principles in the design, construction, and operation of electric furnaces.
Date: July 1922
Creator: Gillett, H. W. & Mack, E. L.

Electric Brass Furnace Practice

Description: Report issued by the Bureau of Mines discussing the use of electric furnaces for melting brass, and other nonferrous alloys. Monetary benefits, health benefits, and other advantages of using electric furnaces are presented. Descriptions of furnaces and their operational methods are also presented. This report includes tables, illustrations, and photographs.
Date: 1922
Creator: Gillett, H. W. & Mack, E. L.

Electric Shot-Firing in Mines, Quarries, and Tunnels

Description: From Introduction: "Data collected by the Bureau of Mines indicate the United States a large percentage of the blasting in quarries, shafts, and tunnels, and from 15 to 25 percent of the blasts in mining operations, are set off electrically. The Bureau of Mines is interested in electric shot-firing because of its use in mining, and especially because electric methods, when properly applied, are undoubtedly safer than other methods commonly used."
Date: 1926
Creator: Ilsley, L. C. & Hooker, A. B.

The Electrothermic Metallurgy of Zinc

Description: Report issued by the Bureau of Mines over the electrothermic metallurgy and smelting of zinc. Different smelting methods, processes, and equipment are presented and discussed. This report includes tables, illustrations, and photographs.
Date: May 1923
Creator: O'Harra, B. Marvel

Experimental Production of Alloy Steels

Description: From Introduction and Reason For Undertaking the Work: "The Bureau of Mines has recently made up experimental heats of alloy steels for the Army and Navy. The Bureau of Mines has analyzed the Army steels for its own guidance only, for analysis of the steels for the arsenal was also scheduled to be made by the arsenal, though it was not, as it happened."
Date: 1922
Creator: Gillett, H. W. & Mack, E. L.

Explosion Hazards From the Use of Pulverized Coal at Industrial Plants

Description: From Introduction: "This bulletin, therefore, presents both bad and the good features of pulverized-coal plants and gives recommendations for safe installation and operation. Consequently, in the preparation of this bulletin much of the material on explosions in plants is based on the results of tests at the experimental mine and in the laboratory dust gallery."
Date: 1925
Creator: Tracy, L. D.

Extinguishing and Preventing Oil and Gas Fires

Description: From Introduction: " As the subject of oil and gas is necessarily broad, no attempt is made in this bulletin to treat it exhaustively; rather the bulletin aims to point out what has been done by operators in the past, and to describe various fire-prevention methods and fire-fighting apparatus which are being used or adopted by many of the larger oil companies. These methods and apparatus, it is believed, if universally employed by operators, will largely decrease the present enormous annual losses."
Date: 1920
Creator: Bowie, C. P.

The Ferric Sulphate-Sulphuric Acid Process: With a Chapter on Producing Small Bubbles of Gas in Liquids by Submerged Orifices

Description: Report issued by the Bureau of Mines over studies conducted on the ferric sulphate-sulphuric acid process. As stated in the introduction, "the work reported here comprises merely a study of the chemistry of the process and the mechanical conditions that would have to be observed in practice" (p. 1). This report includes tables, and illustrations.
Date: 1927
Creator: Ralston, Oliver C. & Maier, Chas. G.