Study of falls of roof and coal in mines in number 8 field of eastern Ohio.

Bibliographic Details

Other Authors:	Paul, J. W. (James Washington), Plein, Leopold Nicholas, 1897-
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1931.
Series:	Mines Bur. Rpt. of Investigation No. 3070
Subjects:	Accidents. Electronic books.
Online Access:	Connect to the full text of this electronic document