A map of the 9th level at the Soudan Mine starting from the No. 8 Shaft going east towards the No. 7 Shaft and weSaint The map shows the drifts, cross cuts, rock formations, raises, core sample drill holes, and stope areas. The stope areas include areas that were mined from the 10th level. Lake Superior Datum.
Creator
Oliver Iron Mining Division, United States Steel Corporation
Publisher
U.S. Steel Corporation (Duluth, Minnesota)
Subject
Business and industry
Temporal Coverage
1953-08-03
Rights
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