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Scientific American, Vol. 61, No. 10 (September 1889) (1889)
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south of the present work is in contemplation other. Each tunnel is lined with a shell of steel, built also. the damage was repaired and the bodies of the un- up of plates secured at the joints by angle irons pro- A year was occupied in taking a most exhaustive fortunate men were recovered. Again,… … ;yl ■..,-, 1. Closing hole in tunnel. 2. Plan o[ shiift and tiinucl ojiining^ 3 View al foot of «e«t ehaft. 4 The tunnel heading. '■.-■ THE HUDSON EIVEE TUNNEL AND THE WOEK IN PEOGEESS UPON IT. © 1889 SCIENTIFIC AMERICAN, INC.Patents · Munn · Plate · Valve · Scientific American · Feet · American supplement · Von welsbach · Storage battery · Express money · Horse power · Car work · Professor loomis · Steel plate · Plate penetrated
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