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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{|Trimming |107+70 |106+80 |Mar. 29, '05|Apr. 12, '05|}
{|Trimming |107+70 |106+80 |Aug. 31, '05|Sept 19, '05|}
| | | | | |
Rock |Bottom heading |106+80 |106+67 |Oct. 5, '05|Nov. 8, '05|
| | | | | |
Mixed |Bottom heading |106+67 |106+39 |Nov. 8, '05|Dec. 23, '05|
| | | | | |
|Sliding hood and | | | | |
Mixed |breasting. Rock |106+29 |105+70 |Dec. 23, '05|Jan. 24, '06|
|bench | | | | |
| | | | | |
Earth |Poling and |105+70 |104+61 |Jan. 24, '06|Feb. 27, '06|
|breasting | | | | |
| | | | | |
| | | | | |
Earth |Poling, breasting|104+61 |103+90 |Mar. 2, '06|Mar. 31, '06|
| and shutters | | | | |
| | | | | |
| | | | | |
Earth |Shutters |103+90 | 99+41 |Apr. 20, '06|Sept 3, '06|
| | | | | |
| | | | | |
Mixed |Bottom bench | 99+41 | 99+17 |Sept 3, '06|Sept 23, '06|
| | | | | |
Mixed |Bottom heading | 99+17 | 98+50 |Oct. 2, '06|Nov. 24, '06|
| | | | | |
| | | | | |
Rock |Bottom heading | 98+50 | 97+72 |Nov. 24, '06|Jan. 16, '07|
| | | | | |
Mixed |Bottom heading | 97+72 | 97+27 |Jan. 16, '07|Feb. 10, '07|