Thomas Mix, 44, left for his overnight job with Mile Hi Frozen Foods just after midnight on July 16, 1981. His shift was routine; he’d worked for the company about fourteen years. Around 3:30 a.m. he was found shot to death beside his work truck on the 1800 block of 29th Street, a short distance from the company’s address on Denargo Market Street near Denver’s Denargo Market.

Early reports mentioned a possible robbery attempt, but official records are sparse. Investigators documented the scene, appealed for tips, and kept the case open as a homicide. No arrests have been recorded and no suspect has been publicly identified, leaving motive and perpetrator unknown decades later.

If anyone worked at Mile Hi Frozen Foods, saw activity near Denargo Market in the predawn hours of July 16, 1981, or has information that could help, please come forward.