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 which relied so much on stock footage.
The bomber that transported the scientists was a North American B-45 Tornado.
The Jet fighter shown as transporting the "magnetic monster" was a Lockheed "Shooting Star" T-33 two seat pilot training aircraft.
Uses stock footage of the underground magneto-dynamo from the German science fiction thriller Gold.