2019-11-202022-02-032019-11-202022-02-03https://hdl.handle.net/11124/173461Donor: Colorado Mining Association.Sink float mill buildings, with mountains in the background.Caption reads: "New sink float mill of Grey Chemical CO. Leadville Colo."6 1/2 x 3 1/2 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Mineral processing plants -- ColoradoMills and mill-work -- Colorado -- Lake CountyStillImage