Uses stock footage of the underground magneto-dynamo from the German science fiction thriller Gold (1934).
Although credited to Curt Siodmak, most of the film was actually directed by Herbert L. Strock, who was hired by Ivan Tors for his skills as an editor, which were viewed as essential for a film that relied so much on stock footage.
The jet fighter shown as transporting the "magnetic monster" was a Lockheed "Shooting Star" T-33 two-seat pilot training aircraft.
The bomber that transported the scientists was a North American B-45 Tornado.
Although she was billed third, the shooting schedule was so tight that Jean Byron shot all of her scenes in one day.