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You searched for: All Subjects Iron mines and mining--Safety appliances--Lake States--Equipment and supplies. Remove constraint All Subjects: Iron mines and mining--Safety appliances--Lake States--Equipment and supplies.
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1. Testing safety catches on mine cages, Lake Superior district.

Creator Personal:
Pearce, Clyde M., Cash, Frank E. (Frank Errette)
Title:
Testing safety catches on mine cages, Lake Superior district.
Call Number:
P19476
Date:
1945
Description:

Serial issue. Issued as: United States. Bureau of Mines. Information circular, 7325 (1945:June).

Subject Topical:
Iron mines and mining--Safety appliances--Lake States--Equipment and supplies.
All:
Iron mines and mining--Safety appliances--Lake States--Equipment and supplies.