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An Investigation of Explosion-Proof Motors

Description: Procedure of Investigation: "The investigation described in this bulletin was undertaken by the Bureau of Mines as one of several investigations having for their purpose the ascertaining of methods for lessening the risks attending the use of electricity in mining. In this report the results of tests are related to the various types of protection employed which are described in detail."
Date: 1912
Creator: Clark, H. H.
Partner: UNT Libraries Government Documents Department
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The Electrical Conductivity of Commercial Copper

Description: Report issued by the Bureau of Standards over the conductivity of copper. Samples of commercial copper were studied, and the results are presented and discussed. This report includes tables, illustrations, and photographs.
Date: 1911
Creator: Wolff, F. A. & Dellinger, J. H.
Partner: UNT Libraries Government Documents Department
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A New Determination of the Ratio of the Electromagnetic to the Electrostatic Unit of Electricity [Part 2]

Description: Report issued by the Bureau of Standards over studies of the determination of the ratio of electricity. The ratio of electromagnetic to electrostatic units of electricity is discussed in detail. This report includes tables, illustrations, and photographs. Part 2 includes section VII and concluding remarks.
Date: 1907
Creator: Rosa, Edward B. & Dorsey, N. E.
Partner: UNT Libraries Government Documents Department
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A New Determination of the Ratio of the Electromagnetic to the Electrostatic Unit of Electricity [Part 1]

Description: Report issued by the Bureau of Standards over new determinations made in regard to units of electricity. Methods and equipment used are discussed. This report includes tables, illustrations, and photographs. Part 1 includes sections I through VI.
Date: 1907
Creator: Rosa, Edward B. & Dorsey, N. E.
Partner: UNT Libraries Government Documents Department
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