Alexander Granach

as Kasper

Fritz Kampers

as Wilderer

Ernst Busch

as Wittkopp

Elisabeth Wendt

as Frau Anna Wittkopp

Gustav Püttjer

as Kaplan

Oskar Höcker

as Mine Foreman

Daniel Mendaille

as Jean Leclerc

Georges Charlia

as Emile

Andrée Ducret

as Françoise

Alex Bernard

as Grandfather Jacques, the Old Miner

Pierre-Louis

as Georges, Jacques's Grandson

Héléna Manson

as Rose, Albert's Wife

Marcel Lesieur

as Albert

Willem Holsboer

as German Mine Engineer

Georges Tourreil

as Engineer Vidal

Palmyre Levasseur

Teddy Michaud

Rortais

Marcel Merminod

Franz Schier

Fritz Wendhausen

as German Mine Director

Adolf Fischer

Gerhard Bienert

as German Gendarme

Georg Guertler

Naupel

Richard Weichert

Friedrich Gnaß

as Fritz, Rescue Volunteer

Reinhardt

Théo Tony

Marguerite Debois

Levasseur

Felix Bressart

as Café Doorman (uncredited)