A black Buick touring car then pulled up and two men jumped out firing sawed-off shotguns, while a third grabbed the money bags.

[3] None of the gunmen were ever identified, with the exception of 36-year-old Nicholas "Chaw Jimmie" Trainor who was killed during the shootout with the U.S Mint Police, and they successfully escaped with $200,000.

On January 14, 1923, Trainor's body was found in their getaway car after it had been dumped in a Gilpin Street garage in Denver.

[2] Police later suspected that Harvey Bailey, who had worked with Trainor in the past, may have been another member of the gang but were never able to produce any evidence of his involvement.

The two alleged surviving members, Harvey Bailey and James "Oklahoma Jack" Clark, had since been sentenced to life imprisonment on unrelated charges.