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.
Carl Ludwig Achaz-DuisbergDirector
Direktor March
Olga Lossen
Ingenieur Karl Hartmann
Camilla von Einerm
Die alte Hartmann
Inspektor Bachmann
Gemeindevorsteher
Zofe