Technical Report Archive & Image Library (TRAIL) - 2 Matching Results

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Gold Dredging in the United States

Report discussing the development of gold dredging in the United States, the essential features of present-day dredges, the facts that determine whether a placer deposit can be profitably dredged, and the approved methods of prospecting placer ground and of operating dredges. Intended for designers and builders of dredges, mining engineers, and persons who may contemplate investing capital in placer-mining ventures.

Date: May 1918

Creator: Janin, Charles

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma

Technical paper issued by the Bureau of Mines over studies of Oklahoma coal mines. As stated in the introduction, "this report describes the systems of mining used, points out their defects, and presents suggestions for improved methods, more especially as regards the applicability of different modifications of the panel system to mining coal in Oklahoma" (p. 5). This paper includes tables, maps, and illustrations.