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Mines and mineral resources -- South Dakota

 Subject
Subject Source: Library of Congress Subject Headings

Found in 2 Collections and/or Records:

Leverett S. Ropes papers

 Collection
Identifier: MC-196
Abstract Helena, Montana, mining and geological engineer Leverett Ropes (1868-1953) was employed by various mining firms, by the federal government, and as a private consultant. This collection contains papers (ca. 1888-1952) concerning Ropes' mining engineering and geology consulting work and his interest in a variety of political issues. The general correspondence (1928-1952) concerns mines in Lewis and Clark, Jefferson, and Broadwater counties, Fort Peck Dam, his dispute with federal agencies over...
Dates: 1888-1952

United States War Production Board Helena District Office records

 Collection
Identifier: MC-239
Abstract The Helena, Montana, district office of the United States War Production Board was established in June 1942 to coordinate production of minerals and other materials for World War II. Records primarily consist of general office correspondence of district manager Oscar A. Baarson; Mining Division correspondence of mining technical advisor William M. Manning and subject files on mine operators in Montana, Idaho, North Dakota, and Wyoming; and general correspondence of salvage coordinator E. J....
Dates: 1941-1946