Methods and Costs of Mining and Preparing Sand and Gravel at the Plant of the Ward Sand and Gravel Co., Oxford, Michigan

Author:	Ward, Frederick L.
Year:	1932
Document Type:	N/A
SUDOC:	C 22.11:6580
Series:	Information circular (United States. Bureau of Mines)
Report Number:	I. C. 6580
Subjects:	Mineral industries -- Michigan -- Oxford.
	Mines and mineral resources -- Michigan -- Oxford.
	Mining engineering -- Michigan -- Oxford.
	Dredges -- Michigan -- Oxford.
Link:	http://digital.library.unt.edu/ark:/67531/metadc67006/