Reducing accidents from falls of roof in coal mines : Part I. Six essentials for mine roofsupport; Part II. Methods and importance of roof testing; Part III. Accidents in coal mines due to falls of roof.

Bibliographic Details

Other Authors:	Owings, C. W. (Clarence Watson), 1894-, Paul, J. W. (James Washington), Tomlinson, Herbert
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1930.
Series:	Mines Bur. Info. Circ. No. 6225
Subjects:	Accidents. Electronic books.
Online Access:	Connect to the full text of this electronic document