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A platform for research: civil engineering, architecture and urbanism
Anaconda sinks circular incline
At Butte, Mont, 14 ft finished concrete circular shaft was sunk on 71 1/2° incline; Blaw-Knox slip forms were used in this unique method of sinking 1860 ft ventilation shaft; access to project was through shaft to 2800 ft level, continuing by crosscut to bottom of 1550 ft shaft; at this point, transition from vertical to 71 1/2° incline was accomplished.
Anaconda sinks circular incline
At Butte, Mont, 14 ft finished concrete circular shaft was sunk on 71 1/2° incline; Blaw-Knox slip forms were used in this unique method of sinking 1860 ft ventilation shaft; access to project was through shaft to 2800 ft level, continuing by crosscut to bottom of 1550 ft shaft; at this point, transition from vertical to 71 1/2° incline was accomplished.
Anaconda sinks circular incline
Eng Min J
1965
Article (Journal)
English
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Online Contents | 2017
Online Contents | 2017
| Engineering Index Backfile | 1956
| British Library Online Contents | 2003
Why Anaconda "raised" Kelley supply shaft
| Engineering Index Backfile | 1955