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Fluorspar mining methods and costs, Ozark-Mahoning Co., Hardin County, Ill.

Published Year

• 1960-1969 (1) *

Subject

• Fluorspar--Illinois--Hardin County (1)
• Geology--Illinois (1)

Author

• Bailie, Harold. (1) *
• Melcher, William. (1)
• Myslinski, F. J. (1)
• Powell, E. (1)

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