Mine electricity
Subtitle: coal surface and underground entry level training : student text material
Publisher: U.S. Department of Labor, Mine Safety and Health Administration, National Mine Health and Safety Academy
Published: 1994
Place of publication: Washington, D.C.?]
Language: eng
Subjects: Coal mines and mining; Study and teaching; Metals; Electric properties; Mine safety
Notes: Shipping list no.: 94-0117-P.

"CI 7a."