Ventilation questions and answers
Contributors: United States. Mine Safety and Health Administration
Publisher: U.S. Department of Labor, Mines Safety and Health Administration
Published: 1992
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 183
Subjects: Coal mines and mining -- United States -- Safety measures; Mine ventilation; Belt conveyors
Notes: Cover title

Shipping list no.: 93-0113-P

"November 9, 1992."