Effectiveness of bleeder entries in ventilating pillared areas of bituminous-coal mines /

Bibliographic Details

Main Authors:	Kingery, D. S. (Donald Samuel) (Author), Dornenburg, D. D. (Author)
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : United States Department of the Interior, Bureau of Mines, 1957.
Series:	Report of investigations (United States. Bureau of Mines) ; 5360.
Subjects:	Mine ventilation.
Online Access:	https://purl.fdlp.gov/GPO/gpo91532