as Geoff Carter
as Judith 'Judy' MacPherson
as Bonnie Lee
as Joe Souther
as Mike, head mechanic
as John 'Dutchy' Van Reiter (as Sig Rumann)
as Sparks (radioman)
as Barthelmess
as Kid Dabb
as Gent Shelton
as Les Peters
as Tex Gordon, lookout
as Lily, Joe's girl
as Dr. Lagorio
as Mr. Harkwright, mine operator (uncredited)
as Felice Torras, Geoff's lady friend (uncredited)
as Pancho