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The Iron Age 1889-04-18: Vol 43

1889 Reed Business Information US

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‘THE Railroad Tunnel. A grand railroad tunnel beneath the bed of the river St. Clair, at Port Huron, Mich., to cost probably $5,000,000, is among the most important of modern en- gineering projects. The engineers Sooy- smith & Co., of New York, contracted with the Grand Trunk Railway Company for the work and preliminary surveys were made some months ago. The company now take charge of the project. The work of excavation on the American side will begin about 2500 feet back from the river, from which point there will be a steady decline to a depth of about 50 feet. The drift from the tunnel proper will be 22 feet in diameter, and the distance from Submarine one river bank to the other is 2200 feet. | ROLLING MILL, The tunnel will have a drop of 90 feet to the mile, the lowest end being on the Ca- nadian side. The work of excavating in the tunnel will be done with large steel ‘*shields,”’ 22 feet in diameter, driven into the earth with 24 powerful hydraulic jacks. A large hydraulic engine will be used to work the jacks, and as fast as the earth is excavated it will be loaded on small trucks for removal. A gang of men will follow with the lining of the tunnel, which is cast iron. The t…

Citation

The Iron Age 1889-04-18: Vol 43. Reed Business Information US. 1889.