Coal-mine fatalities in U.S., 1919, and coal-mine statistics supplementing those published in Bulletin 115; list of permissible explosives, lamps and motors tested prior to Jan. 31, 1920.

Bibliographic Details

Corporate Author:	United States. Department of Commerce
Format:	Government Document eBook
Language:	English
Published:	[Washington] : GPO, 1920.
Series:	Mines Bur. Bull. No. 196
Subjects:	Coal mines and mining. Explosives. Hours of labor. Mine accidents. Electronic books.
Online Access:	Connect to the full text of this electronic document