The film tells about the struggle of the Donbas miners in Ukrainian SSR with saboteurs.
Pyotr Aleynikov
Vanya Kursky
Ivan Pelttser
Ivan Novoseltsev
Mark Bernes
Yuri Lavrov
Vera Shershnyova
Boris Andreyev
Aleksandr Chistyakov
District committee secretary
Vladimir Uralskiy
Kirichenko
