Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 - The New York Tunnel Extension of the Pennsylvania Railroad. - The East River Tunnels. Paper No. 1159 by S. H. Woodard;Francis Mason;James H. Brace
page 45 of 93 (48%)
page 45 of 93 (48%)
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All rock | 49 | 78 | 1.59 | | | | | | | All rock |129 | 373 | 2.89 | | | | | | | Earth and rock| 77 | 190 | 2.47 | | | | | | | All earth |164 |1,275.6 | 7.78 | | --------------+------+--------+--------+--------------------------------------+ LINE A, MANHATTAN. --------------+-----------------+-------------------+-------------------------+ | | Station: | Date: | | |---------+---------+------------+------------+ | | | | | | Material. | Method. | From | To | From | To | --------------+-----------------+---------+---------+------------+------------+ {|Top heading |108+43 |107+74 |July 20, '05|Aug. 3, '05| Rock {|Top lift of bench|108+43 |107+74 |Aug. 8, '05|Aug. 23, '05| {|Bottom lift of |108+43 |107+74 |Aug. 30, '05|Sept 27, '05| {| bench | | | | | | | | | | | Rock {|Bottom heading |107+74 |107+21 |Sept 27, '05|Oct. 23, '05| {|Bottom heading |107+74 |107+21 |Nov. 30, '05|Dec. 29, '05| | | | | | | Mixed |Bottom heading |107+21 |106+99 |Oct. 26, '06|Nov. 20, '06| | | | | | | Mixed |Rock bench |106+99 |106+34 |Nov. 20, '06|Jan. 13, '07| |
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