National safety competition to assist in reduction of mine and quarry accidents.

Bibliographic Details

Other Authors:	Adams, W. W. (William Waugh), 1884-1945
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1929.
Series:	Mines Bur. Info. Circ. No. 6109
Subjects:	Accidents. Electronic books.
Online Access:	Connect to the full text of this electronic document