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.