The Girl Engineer
Plot: A crooked mine owner attempts to hijack his rival's shipment of ore, but Helen foils his plot by jumping onto the engine and pulling the throttle wide open, eventually exposing the unscrupulous villain.
Helen Holmes. Helen Holmes was 22 in The Girl Engineer as 'Helen'.
Leo D. Maloney. Leo D. Maloney was 27 in The Girl Engineer as 'Tom Walker - Owner of the Hope Mine'.
George A. Williams. George A. Williams was 60 in The Girl Engineer as 'Williams - Owner of the Boss Mine'.
Rex Downs. Rex Downs was 29 in The Girl Engineer as 'Evans - Williams' Foreman'.
N.Z. Wood. N.Z. Wood was 58 in The Girl Engineer as 'Merkey - President of the Smelter'.
J.P. McGowan. J.P. McGowan was 35 in The Girl Engineer as 'Director'
Helen Holmes. Helen Holmes was 22 in The Girl Engineer as 'Story'