Keefer, Thomas, C., 1821-1915, American Society of Civil Engineers · [S.l.] : American Society of Civil Engineers · leaf 24
was found to workadmirably in the side-hill cuts—huge masses being blown down thehill—and the remainder, in heavy blocks, was rolled over the side. Inthorough cuts powder was used in heavy charges to break up the snowwhich was too hard for shovelling, except near the top. Picks… … ^TjV _^..Tunpe t0 ke filled w\l\-\ snow and w«Upack«Ji -1%? -% TV* Fiff. 1. 72 ADDRESS OF PRESIDENT THOMAS C. KEEFER. One cutting, about 40 feet deep, was full of trees, and presentedsuch a peculiar appearance after being gulletted for the passage oftrains, that it received the name of the Plum…
Canadian Pacific Limited · Railroad engineering
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