Dr. David Conway
William Leslie
Laura 'Hutch' Hutchinson
Kathryn Grant
Military Policeman (uncredited)
David Armstrong
Dr. Ellis Morton
Tris Coffin
Gov. Chaney
Raymond Greenleaf
Ranger Kirk
Paul Savage
Ranger Brown
Fred Coby
Sheriff Quinn
Frank J. Scannell
Gen. Bortes
Charles Evans
General's Aide
Marshall Reed
Chief Rescue Worker
Terry Frost
Director
Fred F. Sears
Producer
Sam Katzman
Writer
Jack Natteford
Luci Ward
Director of Photography
Benjamin H. Kline
Editor
Paul Borofsky
Art Direction
Paul Palmentola
Sound
J.S. Westmoreland
Set Decoration
Sidney Clifford