Construction Methods, Cushman Tunnel No. 2
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 2
- File Size:
- 193 KB
- Publication Date:
- Jan 1, 1931
Abstract
CUSHMAN TUNNEL No. 2 is adjacent to the Hood Canal, near potlatch, Wash. It is 17 ft. inside .diameter, about 13,000 ft., or two and one- half, miles in length, and is a part of the second unit of the Cushman power project. It connects Cushman ' Dam No. 2 and the penstocks that lead to the power house on the beach about 400 ft. vertically below the outlet of the tunnel. One shaft, 190 ft. deep, and two adits between 300 and 400 ft. long, were provided to speed up driving operations. his arrangement gave 6 working headings, which were operated 24 hr. daily. The shaft provided a manway, cageway, and skipway.
Citation
APA: (1931) Construction Methods, Cushman Tunnel No. 2
MLA: Construction Methods, Cushman Tunnel No. 2. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1931.