2019-11-202022-02-032019-11-202022-02-03https://hdl.handle.net/11124/173457Donor: Colorado Mining Association.Caption reads: "William H. Burgin, Supt of Bull Domingo mine."2 x 2 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Underground mining -- ColoradoBurgin, William H.Miners -- Colorado -- Lake CountyBull Domingo Mine (Colo.)StillImage