Subsidence Due to Coal Mining in Illinois

Author:	Herbert, Charles Arthur
Year:	1927
Document Type:	N/A
SUDOC:	C 22.3:238
Series:	United States Bureau of Mines Reports
Report Number:	Bulletin 238
Subjects:	Subsidences (Earth movements)
	Coal mines and mining -- Illinois.
Link:	https://digital.library.unt.edu/ark:/67531/metadc38761/