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Владимир Гардин as Professor Shakhrov |
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Николай Кутузов as Kuznetsov |
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M. Tulupov as Professor Yaroshevskiy |
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Хаким Давлетбеков as Khakim |
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Евгения Пырялова as Zhenya Maltseva |
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Борис Азаров as Zaretskiy |
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Eliana Dugina as Young Kazakh girl |
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Kheyhana Tastakhova as Young kazakh woman |
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Сергей Голубев as Telegraph operator |
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V. Zakharov as Guryev, student (uncredited) |
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Николай Мичурин as Factory worker (uncredited) |
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Владимир Ромашков as Scientist (uncredited) |
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Vladimir Stukachenko as Factory worker (uncredited) |
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Владимир Чобур as Komsomol member (uncredited) |
| Directing | Александр Дубровский | Director |
| Writing | Александр Дубровский | Writer |
| Writing | Vera Inber | Writer |
| Writing | Габриэл Уреклян | Writer |
| Camera | Георгий Блюм | Director of Photography |
| Art | Василий Комарденков | Production Design |
