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Construction of concrete-lined vehicular tunnel, 1090 ft long, 26 ft wide, crossing hill in western Douglas county.
Construction of concrete-lined vehicular tunnel, 1090 ft long, 26 ft wide, crossing hill in western Douglas county.
Elk Creek tunnel, Umpqua highway, Oregon
West Construction News Highways Bldr
Klein, R.A. (author)
1932
4 pages
Article (Journal)
English
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