Title: American Standard Recommended Practice for Drainage of Coal Mines (M6.1-1955, UDC 622.5)
Author: American Standards Association

Date: 1957
Link to Full Report:
Document Type: USBM
Issuing Agency: U.S. Bureau of Mines
Performing Organization: U.S. Bureau of Mines

Report Number: USBM Bulletin 570
SUDOC: TN 23 U4
Series: U.S. Bureau of Mines Bulletins

Notes:
(Revision of American Recommended Practice for Drainage of Coal Mines, M6-1931) American Standards Association. Sponsor, Bureau of Mines, United States Department of the Interior