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Displaying 1-2 of 2 results for author "Poston, Roy H."
Method and cost of mining at No. 8 mine, St. Louis Smelting and Refining Company, Southeast Missouri district [microform]
- Text
- Washington, D.C. : [s.n.], 1929.
- 1929
Sinking practice and costs at Pim shaft, St. Louis Smelting & Refining Works of National Lead Co., St. Francois, Mo. [microform]
- Text
- Washington, D.C. : [s.n.], 1932.
- 1932
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