Thickness of Bituminous Coal and Lignite Seams Mined in the United States in 1945

Author:	Young, W. H.
Year:	1947
Document Type:	N/A
SUDOC:	I 28.27:7442
Series:	Information circular (United States. Bureau of Mines)
Report Number:	I. C. 7442
Subjects:	Bituminous coal -- United States.
	Lignite -- United States.
Link:	http://digital.library.unt.edu/ark:/67531/metadc67036/