Procedure for establishing a list of permissible self-Ưcontained oxygen breathing apparatus, fees, character of tests, and conditions under which mine rescue breathing apparatus will be tested.

Bibliographic Details

Corporate Author:	United States. Bureau of Mines
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1935.
Subjects:	Breathing apparatus. Mineral industries.
Online Access:	Electronic resource (PDF)