Photo depicts the Bailey Bridge across the inner end of the access tunnel with form work in the background. View is from a high elevation under the roof looking northwest.
Photo depicts the Bailey Bridge across the inner end of the access tunnel with form work in the background. View is from a high elevation under the roof looking northwest.
Notes
Title based on content of photograph. Alcan Collection
Photo depicts two welders, welding the penstock liner elbow section to the 1600' level.
Notes
Alcan ID no. KR-1166. -- Electric pre-heaters used to bring steel up to required temperature prior to and throughout the welding operation. Alcan Collection
Photo depicts a miner beside the penstock liner which is being lowered from the 2600' level.
Notes
Alcan ID no. KR-1386. -- Note the bridle assembly. -- Liners were lowered on a dolly on a 140-ton hoist, then transferred to skid rails for the final journey. Alcan Collection
Photo depicts a worker watching as a 19-ton horizontal penstock liner is transported on an aerial tramway from Camp No. 5 to Camp No. 1600.
Notes
Alcan ID no. 2KR-81. -- This liner was the first and largest of the penstock liners. -- Penstock No. 2 was completed after the smelter had started aluminum production in 1954 with Penstock No. 1. Alcan Collection
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
Photo depicts a general view of the upper powerhouse excavation, looking toward the north end. Seen is the concrete elevator tower coming up from the lower powerhouse. Also, form work for concrete haunches is getting underway at the far end.
Photo depicts a general view of the upper powerhouse excavation, looking toward the north end. Seen is the concrete elevator tower coming up from the lower powerhouse. Also, form work for concrete haunches is getting underway at the far end.
Notes
Title based on content of photograph. -- Alcan ID No. KR-466. Alcan Collection
Photo depicts the extent of scaffolding for the beam and column construction along the upstream wall or "A-line". View is looking north from the inner end of the access tunnel.
Photo depicts the extent of scaffolding for the beam and column construction along the upstream wall or "A-line". View is looking north from the inner end of the access tunnel.
Notes
Title based on content of photograph. -- Alcan ID No. KR-1160. Alcan Collection
