Photo depicts the unlined rock tunnel of horizontal penstock No. 2 at Elevation 210'. View is looking at platform at base of 48 degree inclined raise to 1685' Elevation.
Photo depicts the unlined rock tunnel of horizontal penstock No. 2 at Elevation 210'. View is looking at platform at base of 48 degree inclined raise to 1685' Elevation.
Notes
Alcan ID no. 2KR-10. -- Penstock No. 2 was completed after the smelter had started aluminum production in 1954 with Penstock No. 1. Alcan Collection
