Mark Bonner

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Above: Bonner, circa 1978

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Vital Statistics at Time of Disappearance

  • Missing Since: March 20, 1978 from Boulder, Colorado
  • Classification: Missing
  • Date of Birth: May 12, 1954
  • Age: 23 years old
  • Height and Weight: 6'3, 150 pounds
  • Distinguishing Characteristics: Caucasian male. Blond hair, blue eyes.
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    Details of Disappearance

    Bonner was last seen in Boulder, Colorado on March 20, 1978. He has never been heard from again. Few details are available in his case.

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    Investigating Agency
    If you have any information concerning this case, please contact:
    Boulder County Sheriff's Office
    303-441-3615

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    Source Information
    Colorado Bureau of Investigation
    NamUs

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    Updated 1 time since October 12, 2004.

    Last updated October 6, 2015; casefile added.

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