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Pennsylvania Tunnel Plan; contract let May 2, ‘04, to O'Rourke Eng. Con. Co.; work begun in Manhattan shaft April 1, '04, in Weehawken shaft, Sept. 1 ; shields of north tube met 168 ft. west of state line Sept. 12, '06, south tube, 370 ft. east of state line, Oct. 9, ’06.

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