His alleged employment as a physicist at Los Alamos Meson Physics Facility, within the Los Alamos National Laboratory, is mentioned in multiple New Mexico newspaper articles from the summer of 1982, which focus on his interest in jet-powered cars. KLAS found a Robert Lazar in a 1982 Los Alamos National Laboratory phone directory, but the laboratory repeatedly denied having any records on him. Lazar alleges that his records have been erased; however, skeptics such as Donald R. Prothero, Stanton T. Friedman, and Timothy D. Callahan have found this to be implausible. According to Prothero, "He was employed not by the government but rather as a technician working for a private company that contracted work at Los Alamos."