Organized by the Decree of the Presidium of the Supreme Soset of the National Economy of the USSR on September 13, 1931. The Soyuzsera Trust united the following mines and deposits: Shor-Su in Uzbekistan, Kara-Kum, Gaurdak and Aidan in Turkmenistan, Gyumur in Transcaucasia, Chekur-Koyash in Crimea, Liquidated in December 1936.
Orders and circulars of the Supreme Council of the National Economy, the State Planning Commission, the People's Commissariat of Heavy Industry and the Main Directorate of the Chemical Industry of the USSR, the All-Union Soyuzser Trust, the Central Executive Committee and the Russian Communist Party of the Uzbek SSR and the Turkmen SSR on the organization of labor in the mining industry, production rates: orders for management and individual mines of the trust.
Verbatim report of the All-Union Conference of Workers of Ferrous Metallurgy Enterprises (1935), minutes of meetings of the board of the trust and mining departments, meetings with the manager of the trust and technical meetings with the chief engineer; production plans, reports on the activities of the trust (1932-1936), plans for capital construction (1933-1935).
