Mine Safety Board decision 28 : Safety catches and arresting devices for cages, skips, and cars in mine shafts and slopes.

Bibliographic Details

Corporate Author:	United States. Bureau of Mines
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1938.
Subjects:	Mine accidents. Work environment.
Online Access:	Electronic resource (PDF)