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Big tunnel-lining job fully mechanized
Illustrated description of equipment and methods used in concreting Union Pacific's new $ 8,000,000 Aspen tunnel; placing of concrete lining, now more than half complete, is final major step in construction of 6700-ft single track bore that railroad started to drill through Uinta Mountain range in Western Wyoming about 2 yr ago; tunnel parallels present single track Aspen tunnel, completed in 1901. (See also Ry Age v 127 n 11 Sept 10 1949 p 452-4; Western Construction News v 24 n 9 Sept 1949 p 84-5)
Big tunnel-lining job fully mechanized
Illustrated description of equipment and methods used in concreting Union Pacific's new $ 8,000,000 Aspen tunnel; placing of concrete lining, now more than half complete, is final major step in construction of 6700-ft single track bore that railroad started to drill through Uinta Mountain range in Western Wyoming about 2 yr ago; tunnel parallels present single track Aspen tunnel, completed in 1901. (See also Ry Age v 127 n 11 Sept 10 1949 p 452-4; Western Construction News v 24 n 9 Sept 1949 p 84-5)
Big tunnel-lining job fully mechanized
Civ Eng (NY)
1949
Article (Journal)
English
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