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01/11/1955 United Airlines Flight 629 blows up over Colorado

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Historical Facts About the Denver D.A.'s Office: The Bombing of United Airlines Flight 629

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1955 & UA Flight 629 Facts | A Crime to Remember

John "Jack" Gilbert Graham killed 44 people aboard United Airlines Flight 629 near Longmont, Colorado using a dynamite time bomb. Graham planted the bomb in his mother's suitcase, who was killed along with 43 other people, in an apparent move to claim US$37,500 worth of life insurance money from policies he purchased in the airport terminal.