Coal and metal and 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: 2000
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 50
Subjects: Mining law -- United States; Miners -- Training of -- United States
Other titles: 30 CFR part 50
Notes: Shipping list no.: 2001-0123-P

"CI 30a."