[Four images] [1]Gulch mining.--Colorado Gulch. [2] Spanish Arastra.--on Clear Creek. [3]The stamp process--Mr. Sensenderfer's Mill. Shaft or lode mining.--Interior of No. 1, on the Gregory, the Black Hawk Co.'s Mine
2016191
Found In:
Beinecke Rare Book and Manuscript Library > [Four images] [1]Gulch mining.--Colorado Gulch. [2] Spanish Arastra.--on Clear Creek. [3]The stamp process--Mr. Sensenderfer's Mill. Shaft or lode mining.--Interior of No. 1, on the Gregory, the Black Hawk Co.'s Mine
mining.