The Soviet-Polish scientific and technical meeting (spring 1956) of miners; among the speakers - deputy. Minister of the Coal Industry of the USSR D.G. Onika. Delegations of the socialist countries visited the laboratory for research and wear of mining machines, the Malakhovsky experimental plant for the manufacture of coal combines, conveyors and supports. Visits by delegations of Moscow State University, the Tretyakov Gallery, the Lenin Museum in Gorki.