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RuРазработка месторождений драгоценных и поделочных камней
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The order of the head of the expedition to the Kobya-Voskresenic plants of the office of her Imperial Majesty P.A.Soimonova to the head of the Kolyvan-Voskresensky factories G.S.Pitching on the organization and conduct of work on the search for new deposits of colored stones
The order of the head of the expedition to the Kobya-Voskresenic plants of the office of her Imperial Majesty P.A.Soimonova to the head of the Kolyvan-Voskresensky factories G.S.Pack on the organization and conduct of work on the search for new deposits of colored stones (UD No. 55).1786.