Body From Campbell County Cold Case Identified

On August 10, 1983, the body of an unidentified female homicide victim was discovered in the state gravel pit on North Highway 59 by state highway department employees.
 
The female’s remains were sent to the Wyoming State Crime Lab, where it was estimated that the female’s death had occurred approximately one year prior to the discovery of her body.
 
On June 18, 2014, the University of North Texas Health Science Center notified the CCSO that an association was noted between the genetic data obtained from the unidentified female discovered in Campbell County in 1983 and DNA samples submitted by the Minnesota Bureau of Criminal Apprehension, which came from the parents, sister, and daughter of Mary Lynn Andersen, who was reported as a missing person by the Becker County Sheriff’s Office in Detroit Lakes, Minnesota in 1986.
 
Mary’s family last heard from her in 1982, when she was living in Gillette.  Mary traveled frequently and had occasional contact with her family.  She wasn’t reported missing until her family hadn’t heard from her for several years.
 
Mary had epilepsy and had grand mal seizures as often as once a week.  She did not drive or hold down a job because of her epilepsy.  Mary was 5’6”, weighed about 120 pounds and had brown hair and brown eyes.
 
Mary spent about a week in the hospital in Gillette in October of 1982, and she may have arrived in Gillette as early as May of 1982.  The CCSO is working with Mary’s family to learn as much as possible about her associations and the places she may have frequented in Gillette.
 
Mary was killed sometime after October 18, 1982 and buried in a shallow grave in the gravel pit where her body was found in August 1983.
 
Mary sometimes used her married name, Shondel, and may have come to Gillette with her husband, Herb Shondel.  Herb passed away in 2002.
 
The CCSO requests that anyone with any information about Mary or her death please contact the Sheriff’s Office. 

Mary was age 23 when her body was found.  She is pictured above with her daughter. Her daughter is now 34.
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