cast
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Charlton Heston
Stewart Graff
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Ava Gardner
Remy Royce-Graff
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George Kennedy
Sgt. Lew Slade
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Lorne Greene
Sam Royce
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Geneviève Bujold
Denise Marshall
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Richard Roundtree
Miles Quade
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Marjoe Gortner
Jody
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Barry Sullivan
Dr. Willis Stockle
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Lloyd Nolan
Dr. James Vance
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Victoria Principal
Rosa Amici
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Walter Matthau
Drunk
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Monica Lewis
Barbara
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Gabriel Dell
Sal
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Pedro Armendáriz Jr.
Chavez
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Lloyd Gough
Bill Cameron
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John Randolph
Los Angeles Mayor
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Kip Niven
Walter Russell
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Scott Hylands
Asst. Caretaker
- Tiger Williams Corry
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Donald Moffat
Dr. Harvey Johnson
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Jesse Vint
Buck
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Alan Vint
Ralph
- Lionel Johnston Hank
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John Elerick
Carl Leeds
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John S. Ragin
Chief Inspector
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George Murdock
Colonel
- Don Mantooth Sid
- Michael Richardson Sandy
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Alex Brown
Pool Player
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Bob Cunningham
Dr. Frank Ames
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John Dennis
Brawny Foreman
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Gene Dynarski
Dam Caretaker
- Bob Gravage Farmer Mr. Griggs
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H.B. Haggerty
Pool Player
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Tim Herbert
Las Vegas Man
- Dave Morick Technician
- Ines Pedroza Laura
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Josh Albee
Boy with Radio (uncredited)
- Benjie Bancroft Citizen (uncredited)
- Buzz Barbee Restaurant Patron (uncredited)
- Joan Blair Pawnbroker's Wife (TV version) (uncredited)
- Hal Bokar Dam Workman (uncredited)
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Reb Brown
Young Man on Motorcycle (uncredited)
- Vivian Brown Woman (uncredited)
- Ian Bruce Officer Scott (Wilson Plaza) (uncredited)
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Polly Burson
Earthquake Survivor (uncredited)
- William H. Burton Jr. Stranger (uncredited)
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Ric Carrott
National Guardsman (uncredited)
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David S. Cass Sr.
Sherriff Merle (uncredited)
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Lonny Chapman
LAPD Captain (uncredited)
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Sam Chew Jr.
Tony (Kathie's Husband) (uncredited)
- Shannon Christie Dr. Vance's Nurse (uncredited)
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Erik Cord
Office Worker (uncredited)
- Caitanya Dasi Hare Krishna (uncredited)
- Cinmayi Devi Hare Krishna (uncredited)
- Ken DuMain Earthquake Survivor in Wilson Plaza (uncredited)
- Patty Elder Blonde Secretary in Royce Building (uncredited)
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Kenny Endoso
Bar Cook (uncredited)
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Jeannie Epper
Blonde Woman (uncredited)
- Dotty Ertel Earthquake Survivor (uncredited)
- Bobby Ferro Sports Car Thief (uncredited)
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Bruce M. Fischer
Man (uncredited)
- Sig Frohlich Doctor (uncredited)
- James W. Gavin Helicopter Pilot (uncredited)
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Ernest Harada
Seismologist (uncredited)
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Jerry Hardin
Man (uncredited)
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Bob Harks
Man Fleeing Movie Theatre (uncredited)
- Orwin C. Harvey Man on the Balcony of a Falling House (uncredited)
- Lars Hensen Citizen (uncredited)
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Diana Herbert
Woman (uncredited)
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Bert Kramer
Policeman (uncredited)
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Paul LeClair
National Guardsman (uncredited)
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Karl Lukas
Man (uncredited)
- Ernesto Molinari Citizen (uncredited)
- Stevie Myers Earthquake Victim (uncredited)
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Jimmy Nickerson
Seismology Graduate Student (uncredited)
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Stuart Nisbet
Man on Loudspeaker (voice) (uncredited)
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Frances Osborne
Housewife (uncredited)
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Grant Owens
Police Officer (uncredited)
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Charlie Picerni
Pool Player (uncredited)
- Tony Regan Man Fleeing Movie Theatre (uncredited)
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Leoda Richards
Emergency Soup Kitchen Worker in Wilson Plaza (uncredited)
- Clark Ross Man in Outer Office (uncredited)
- George Sawaya Deputy Sherriff (uncredited)
- Mark Sawtelle Boy (uncredited)
- Fred Scheiwiller Jay the Bartender (uncredited)
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Debralee Scott
Kathie (TV version) (uncredited)
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Dean Smith
Pool Player (uncredited)
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Eddie Smith
Citizen (uncredited)
- Norman Stevans Radio Station Technician (uncredited)
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Arthur Tovey
Citizen (uncredited)
- John Tuell Prop Tractor Driver (uncredited)
- Dick Tufeld Opening Narrator (uncredited)
- Kitty Vallacher Grocery Store Clerk (uncredited)
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Keith Walker
Man on the Radio (voice) (uncredited)
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Sandy Ward
Studio Guard (uncredited)
- Rick Warick Office Worker (uncredited)
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Dick Warlock
Diver at Hollywood Reservoir (uncredited)
- William Whitaker Ambulance Driver (uncredited)
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Don Wilbanks
Dam Workman with Blowtorch (uncredited)
- Forrest Wood Man (uncredited)
- Clint Young Dam Workman (uncredited)