Обогащение полезных ископаемых

Обогащение полезных ископаемых

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The case of the issuance of a 5-year-old privilege of the rule of the mining department with the Governor-General of Eastern Siberia Titular Counselor Daechman on the gold coating machine invented by it, called the "gold coating screw"

Department of State Saving Department of the State Council.The case of the issuance of a 5-year-old privilege to the rule of the mining department with the Governor-General of Eastern Siberia Titular adviser to Daechman on the gold coating machine invented by them, called the "gold coating screw".