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Scientific American, Vol. 89, No. 8 (August 1903) (1903)

leaf 3

An illustration from Scientific American, Vol. 89, No. 8 (August 1903), 1903, leaf 3
1882 tunnel was driven to prove sufficient, in co-operation way underground railway in this city, when the meth- suspended operations. Subsequently, in 1890, an Eng- od designed by the late Alfred E. Beach, one of the with the compressed air, to resist distortion until the 2-foot brick lining of… … Front View of New Shield for South Tunnel. View or Twin Air-lock in Tunnel, Showing- Shifting- Rails for Entering Lock Chamber. Profile of the Hudson River Tunnel, Showing by Black Shading the Portions Yet to be Excavated. THE HUDSON BIYEB TUNNEL. © 1903 SCIENTIFIC AMERICAN, INC

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