When the body of an unidentified young man with two gunshots to the head was found in a sanitation landfill in Utah nearly 40 years ago, the killing appeared unsolvable and the case sat with dozens of other old files in a local sheriff’s office for decades. The Charley Project, a website that profiles thousands of missing people, says the man planned to go to one of his siblings’ homes in Berkeley or Truckee in California. On June 10, 1976, the body of a 6-foot man with shoulder-length hair was found at a sanitation landfill site in Wendover, Utah, according to the National Center for Missing and Exploited Children. The breakthrough in the mystery came after Tooele County detectives started working with the state medical examiners last fall to try to solve cold cases.