

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.
Director: Carl Ludwig Achaz-Duisberg

Direktor March

Olga Lossen

Ingenieur Karl Hartmann

Camilla von Einerm

Die alte Hartmann

Inspektor Bachmann

Gemeindevorsteher
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