The Bonanza and Freedom (Oliver) Mills were up Gregory
Gulch from Black Hawk. They were not on the Gilpin (it ran above them)
but were near mile post 38.0.
Bonanza Mill and Mine
H H Lake
Abbott Collection
The Gilpin Tram right of way can be seen in the upper
right.
Bonanza shaft building looking up the hill at the Gilpin.
Abbott Collection
Shaft buildings with tram trackage in background.
Freedom / Oliver Mill
The Freedom/Oliver Mill, the Bonanza can be seen central left.
Oliver Mill, Gilpin Trackage can be seen above.
Crea Collection