Coal and metal/nonmetal entry level training student text material.
Publisher: U.S. Dept. of Labor, Mine Safety and Health Administration, National Mine Health and Safety Academy
Published: 1994
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 48
Subjects: Mining law -- United States.; Miners -- Training of -- United States.
Other titles: 30 CFR part 50.
Notes: Shipping list no.: 2002-0274-P.

"CI 30a."