Mining and grinding methods and costs at the Malvern Clay Co. mine, Malvern, Ohio

Author: Lintner, E. J.
Year: 1937
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:6962
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 6962
Subjects: Clay
Clay mines and mining--Ohio
Link: https://hdl.handle.net/2027/mdp.39015077570102

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