Falls of roof in bituminous coal mines : influence of seasons and rate of production.

Bibliographic Details
Other Authors:	Paul, J. W. (James Washington)
Format:	Government Document eBook
Language:	English
Published:	[Washington?] : U.S. Government Printing Office, 1929.
Series:	Mines Bur. Technical Paper No. 410 (rev.)
Subjects:	Coal mines and mining. Electronic books.
Online Access:	Connect to the full text of this electronic document

Description
Item Description:	[With data on temperature and humidity in coal-producing States] Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from ProQuest, LLC. Electronic resource.
Physical Description:	1 online resource (ii, 40 pages)
Format:	System requirements: PDF reader software.