Grounding Electrical Equipment In and About Coal Mines

Author: Griffith, Franklin E.
Year: 1943
Document Type: N/A
SUDOC: I 28.23:3734
Series: United States Bureau of Mines Reports
Report Number: R. I. 3734
Subjects: Coal mines and mining.
Mines and mineral resources -- Equipment and supplies.
Link: http://digital.library.unt.edu/ark:/67531/metadc38430/

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