The engineer Karl Hartmann invents a new, gigantic brown coal excavator. He discovers that there are large deposits below his home country and decides to use the excavator there.
Heinrich George
Direktor March
Viola Garden
Olga Lossen
Ivan Koval-Samborskiy
Ingenieur Karl Hartmann
Ilse Stobrawa
Camilla von Einerm
Gertrud Arnold
Die alte Hartmann
Paul Biensfeldt
Inspektor Bachmann
Paul Henckels
Gemeindevorsteher
Ilse Vigdor
Zofe
