11-mi long Clear Creek water tunnel near Whiskeytown, Calif, is round bore 17 1/2 ft diam; 8 1/2 mi of tunnel is driven through hard granite, consisting at inlet end, of meta-andesite and at outlet end, of meta-rhyolite; Moran gantry jumbos and Conway No. 100 muckers used; jumbo is moved on wide spaced tracks; trains of 12 cu yd muck cars and Plymouth locomotive; jumbo loads and picks up cars, lifting them over locomotive and actually rearranges train with locomotive at opposite end.
Four headings worked on Trinity project
Pac Bldr Engr
Pacific Builder and Engineer ; 64 , n 6
1958
3 pages
Article (Journal)
English
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Subject headings for aeronautical index
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