Book-bot.com - 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 Woodard, S. H.;Mason, Francis;Brace, James H.

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
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{| bench |108+15 |107+87 |Sept 11, '05|Sept 26, '05|
| | | | | |
Rock |Bottom heading |107+87 |107+00 |Oct. 23, '05|Jan. 17, '06|
| | | | | |
Mixed |Bottom heading |107+00 |106+64 |Jan. 17, '06|Feb. 12, '06|
| | | | | |
Mixed |Rock bench |106+64 |106+31 |Feb. 12, '06|Mar. 1, '06|
| | | | | |
Earth |Poling and |106+31 |105+58 |Mar. 1, '06|Apr. 3, '06|
| breasting | | | | |
| | | | | |
|Shutters in | | | | |
Earth | contact with |105+58 | 99+19 |Apr. 9, '06|Nov. 1, '06|
| face | | | | |
| | | | | |
Mixed |Rock bench | 99+19 | 98+44 |Nov. 1. '06|Dec. 29, '06|
| | | | | |
Mixed |Bottom heading | 98+44 | 97+76 |Dec, 29, '06|Feb. 12, '07|
| | | | | |
Mixed |Rock cut | 97+66 | 93+84 |Feb. 12, '07|Aug. 6, '07|
| | | | | |
Rock |Full face | 93+84 | 93+21 |Aug. 6, '07|Sept 2, '07|
| | | | | |
Rock |Center Heading | 93+21 | 92+30 |Sept 2, '07|Oct. 12, '07|
| | | | | |
Rock |Bottom heading | 92+30 | 90+99 |Oct. 12, '07|Dec. 6, '07|
| | | | | |
Mixed |Rock cut | 90+99 | 90+49.6 |Dec. 6, '07|Jan. 3, '08|
--------------+-----------------+---------+---------+------------+------------+