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A. Genin

Nahum Beychik, inventor

Василий Бокарев

Surkov, master

Кузьма Ястребецкий

Lopatin

Александр Дулетов

Kuzma, Surkov's son

Николай Акимов

Factory secretary

Ye. Bondina

Lopatina

Т. Соколовская

Nadya

F. Tarasov

Worker

S. Stepanov

Worker

V. Snezhinskaya

(uncredited)

Viktor Arkasov

Worker (uncredited)

Иван Мутанов

Worker (uncredited)