Elenco - The Girl Engineer
Helen Holmes
Helen
Leo D. Maloney
Tom Walker - Owner of the Hope Mine
George A. Williams
Williams - Owner of the Boss Mine
Rex Downs
Evans - Williams' ForemanN.Z. Wood
Merkey - President of the Smelter Helen Holmes
HelenLeo D. Maloney
Tom Walker - Owner of the Hope MineGeorge A. Williams
Williams - Owner of the Boss MineRex Downs
Evans - Williams' ForemanN.Z. Wood
Merkey - President of the Smelter