Instructions, roof fall entrapment
Contributors: United States. Bureau of Mines
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1989
Place of publication: [Washington, D.C.?
Language: eng
Number of pages: 14
Subjects: Mine accidents -- United States; Mine rescue work -- United States -- Problems, exercises, etc
Other titles: Roof fall entapment
Notes: Running title: Roof fall entrapment

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