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Scientific American, Vol. 97, No. 18 (1907) (1907)

leaf 4

An illustration from Scientific American, Vol. 97, No. 18 (1907), 1907, leaf 4
in finding a route without en- is being built by the government, and the western the openings and at the outer faces of the shell. Be- countering a summit of upward of 5,000 feet. The division by the Grand Trunk itself. The govern- cause of this reinforcement, it was possible to make total… … traffic by the Grand Trunk Pa- cific is 6,990 feet, that against westbound traffic being 6,890 feet. Other roads have from 15,987 feet to 34,003 feet, and from 15,305 feet to 34,506 feet, respectively. As against the maximum gradients of 21 feet against eastbound traffic and 26 feet against…

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