Panic bars and automatic brakes
By: by Cecil E. Lester
Contributors: United States. Mining Enforcement and Safety Administration
Series: Informational report - Mining Enforcement and Safety Administration -- IR1012; Informational report (United States. Mining Enforcement and Safety Administration) -- IR1012
Publisher: Mining Enforcement and Safety Administration
Published: 1975
Place of publication: [Washington]
Language: eng
Number of pages: 24
Subjects: Mining machinery -- Electric equipment -- Safety measures; Mine accidents