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Chrysotile-Asbestos Deposits of Arizona

Description: Report issued by the U.S. Bureau of Mines discussing asbestos mining and production in Arizona. As stated in the summary, "this paper describes most of the chrysotile-asbestos deposits of Arizona. Mining methods are discussed briefly and asbestos-mill flowsheets are incorporated" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date: January 1955
Creator: Stewart, L. A.
Partner: UNT Libraries Government Documents Department
open access

Ringelmann Smoke Chart (Revision of I.C. 6888)

Description: Revised report discussing the Ringelmann Smoke Chart, describing the history and background of the chart, its use, and how to read it.
Date: August 1955
Creator: Burdick, L. R. & Kudlich, Rudolph
Partner: UNT Libraries Government Documents Department
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