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Scientific American, Vol. 58, No. 3 (1888) (1888)
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he plan was adopted of cutting out a sec- place. As soon as it reaches its position, it is jacked rods were set up. This brought two bridges on each tion of one track with its underpinning and setting up side of the regularroadway. The false work was taken the pile driver in the gap and there… … © 1888 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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