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A. Genin

Nahum Beychik, inventor

Василий Бокарев

Surkov, master

Kuzma Yastrebetsky

Lopatin

Aleksandr Duletov

Kuzma, Surkov's son

Николай Акимов

Factory secretary

Ye. Bondina

Lopatina

Т. Соколовская

Nadya

F. Tarasov

Worker

S. Stepanov

Worker

V. Snezhinskaya

(uncredited)