How are men killed in mines by falls of roof and coal.

Bibliographic Details

Other Authors:	Paul, J. W. (James Washington)
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1927.
Series:	Mines Bur. Info. Circ. No. 6035
Subjects:	Mine accidents. Electronic books.
Online Access:	Connect to the full text of this electronic document