The Girl Engineer
Overview
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.
The Hazards of Helen
Cast

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' Foreman
N.Z. Wood
Merkey - President of the Smelter