Approximate sketch of the Pokrovsky Mine : south of White Mountain, Kolchan property, east Siberia. / C.W. Purington. 1910.
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Purington, Chester Wells, 1871-....
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American mining engineer. From the description of Chester Wells Purington report, 1921. (Unknown). WorldCat record id: 754867787 Biographical/Historical Note American mining engineer. From the guide to the Chester Wells Purington report, 1921, (Hoover Institution Archives) ...
Orsk Goldfields, Limited.
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