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| City tunnel. Interior of temporary superstructure over Shaft 11 showing discharge pipe from float at left, telescope with crane in center, and at right traveling crane above and cable reel below. Contracts 140 and 166. January 5, 1917. |
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| City tunnel. Interior of temporary superstructure over Shaft 11 showing discharge pipe from float at left, telescope with crane in center, and at right traveling crane above and cable reel below. Contracts 140 and 166. January 5, 1917. |
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