[Alta] Figure 6. Plan of Underground Workings Columbus Consolidated Mg. Co. / Figure 7. Longitudinal Section Grizzly Mine / Figure 8. Plan of Lower Tunnel Grizzly Mine
[Alta, UT]: [Columbus Consolidated Mining Company], October, 1911. Plate 3. Hand-colored blue line map [82.5 cm x 1086 cm] / [32 1/2" x 42 1/2"] on two sheets. Gentle wear to extremities with upper left corner chipped with a few small losses. About very good. Large mine tunnel map for..... More