 WFM member Harry Orchard later confessed to setting the dynamite bomb on the 600-foot level next to the mine shaft, and rigging it to explode when the next person got off on that level.He wrote that he and another WFM member, Billy Aiken, had entered the mine through an old unused shaft, and that a third, Billy Gaffney, had stayed at the surface as a lookout.Orchard wrote that he had been paid to plant the dynamite by Mr. Davis, the president of the Altman local, one of the WFM locals in the Cripple Creek district.