| Person | Type | Job | Role(s) |
|---|---|---|---|
 Franklin Adreon | Crew | Writing | Screenplay |
John English | Crew | Directing | Director |
Joseph F. Poland | Crew | Writing | Screenplay |
Norman S. Hall | Crew | Writing | Screenplay |
Ronald Davidson | Crew | Writing | Screenplay |
Sol Shor | Crew | Writing | Screenplay |
 William Witney | Crew | Directing | Director |
 Al Taylor | Cast | Actor | Joe |
Alan Gregg | Cast | Actor | Red - Mine Thug |
 Archie Twitchell | Cast | Ross | |
Bert LeBaron | Cast | Actor | Henchman Fallon |
Bill Wilkus | Cast | Truck Henchman | |
 Bud Geary | Cast | Actor | Hallett |
Bud Wolfe | Cast | Actor | Sailor at Cable |
 C. Montague Shaw | Cast | Actor | Prof. Thomas Scott |
 Charles Hutchison | Cast | Actor | Proprietor |
 Charles Trowbridge | Cast | Actor | Gov. Bronson |
 Cy Schindell | Cast | Actor | Jake - Biplane Pilot |
 Davison Clark | Cast | Actor | Police Lieutenant |
Dorothy Herbert | Cast | Alice Brent | |
Duke Green | Cast | Actor | Duke - Mine Thug |
Duke Taylor | Cast | Watkins - Fire Escape Thug | |
 Ed Cassidy | Cast | Actor | Barton |
 Eddie Dew | Cast | Actor | Gas Station Attendant |
 Eddie Parker | Cast | Actor | Chuck - Lead Truck Thug |
 Eduardo Ciannelli | Cast | Actor | Doctor Satan |
 Edwin Stanley | Cast | Actor | Col. Bevans |
 Ella Neal | Cast | Lois Scott | |
Ernest Sarracino | Cast | Actor | Henchman-Guard |
 Frank Brownlee | Cast | Actor | Panamint Pete |
Frank Conklin | Cast | Station Master Burns | |
 Frank Ellis | Cast | Actor | Plant Henchman |
George Allen | Cast | Henchman-Driver Spike | |
 Hal Price | Cast | Actor | P&G Warehouse Mgr. |
 Harry Strang | Cast | Actor | Police Officer Davis |
 Jack Mulhall | Cast | Actor | Police Chief Rand |
 Jack O'Shea | Cast | House Heavy | |
 James Bush | Cast | Actor | Co-Pilot |
James Fawcett | Cast | Al | |
Jerry Jerome | Cast | House Heavy | |
 Joe McGuinn | Cast | Actor | Gort |
 John Bagni | Cast | Gray, Pick-up Thug | |
Ken Terrell | Cast | Actor | Corwin |
 Kenneth Harlan | Cast | Actor | Capt. Lathrop |
 Lloyd Whitlock | Cast | Actor | Prof. Williams |
 Lynton Brent | Cast | Actor | Scarlett |
 Marten Lamont | Cast | Actor | Steve - Pilot |
Patrick Kelly | Cast | Actor | Plant Henchman |
 Paul Marion | Cast | Actor | Corbay |
 Robert Wilcox | Cast | Actor | Bob Wayne / Copperhead |
Sam Garrett | Cast | Roper | |
 Ted Stanhope | Cast | Actor | Warehouse Watchman |
 Tom Steele | Cast | Actor | Truck Henchman |
 Tris Coffin | Cast | Actor | Wells - Governor's Secretary |
 Virginia Carroll | Cast | Actress | Nurse |
 Wally West | Cast | Actor | Palmer - Thug |
 Walter McGrail | Cast | Actor | Stoner |
 William Newell | Cast | Actor | Speed Martin |
William Stahl | Cast | Detective Brock | |
 Yakima Canutt | Cast | Actor | Sailor at Winch |
Fred Criswell | Cast | Officer | |
Robert Wayne | Cast | Actor | Detective Perry |
| Person | Type | Job | Role(s) |
