professor Dan Olteanu
George Vraca
professor Dan Olteanu

In his struggle to innovate in an industrial plant, Professor Oltenu discovers, through laboratory research, a new technique that could be very useful in turning iron ore into better steel and products made from it. His experiments don't always yield the best results, especially when he is "helped" in his endeavors by a saboteur. The professor's wife and one of his employees help expose the saboteur and convince the professor to continue his work. Eventually the saboteurs are caught and severely punished, and the professor's research is patented and turned into successful manufacturing nanotechnology.
professor Dan Olteanu
George Vraca
professor Dan Olteanu
Anca Olteanu, Dan's wife
Irina Răchițeanu
Anca Olteanu, Dan's wife
colonel Jack Paleologu
Jules Cazaban
colonel Jack Paleologu
engineer Tasca
Fory Etterle
engineer Tasca
Virgil Sachelarie, professor Olteanu's assistant
Ion Lucian
Virgil Sachelarie, professor Olteanu's assistant
Mișu
Grigore Vasiliu-Birlic
Mișu
professor Cristea
Mircea Constantinescu
professor Cristea
Graziela Albini
Sanda Costiniu
foreign agent Spiridon Dumitrescu
Ion Henter
foreign agent Spiridon Dumitrescu
Gheorghe Ionescu-Gion
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