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You searched for: Digital Content No Digital Content Remove constraint Digital Content: No Digital Content Subject Topical Iron mines and mining--Minnesota. Remove constraint Subject Topical: Iron mines and mining--Minnesota.
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1. Storage of explosives in underground mines of the Lake Superior District.

Creator Personal:
Cash, Frank E. (Frank Errette)
Title:
Storage of explosives in underground mines of the Lake Superior District.
Call Number:
P19467
Date:
1946
Description:

Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7343 (1946:Feb.).

Subject Topical:
Iron mines and mining--Wisconsin., Iron mines and mining--Michigan., Mine explosives., Iron mines and mining--Minnesota.
All:
Iron mines and mining--Wisconsin., Iron mines and mining--Michigan., Mine explosives., Iron mines and mining--Minnesota.