A meeting at the building of the O. Yu. Schmidt Institute of Physics of the Earth of the Academy of Sciences of the USSR on the occasion of the opening of a memorial plaque in memory of Otto Yulievich Schmidt. Among those present at the meeting: Vice-President of the USSR Academy of Sciences A. Vinogradov, Director of the Institute of Physics of the Earth Academician M. A. Sadovsky and others. The opening of the memorial plaque.