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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Mixed |Bottom heading |106+62 |106+55 |Dec. 2, '05|Dec. 23, '05|
| | | | | |
| | | | | |
Mixed |Bottom heading |106+55 |106+17 |Feb. 12, '06|Mar. 22, '06|
| | | | | |
Mixed |Rock cut |106+17 |105+85 |Apr. 2, '06|Apr. 20, '06|
| | | | | |
Mixed |Rock cut |105+85 |105+55 |July 27, '06|Aug. 26, '06|
| | | | | |
| | | | | |
Earth |Breasting and |105+55 | 99+40 |Aug. 26, '06|Jan. 2, '07|
| poling | | | | |
| | | | | |
Mixed |Rock cut | 99+40 | 98+70 |Jan. 2, '07|Feb. 6, '07|
| | | | | |
Rock |Full face | 98+70 | 98+60 |Feb. 6, '07|Feb. 12, '07|
| | | | | |
Mixed |Bottom heading | 98+60 | 98+39 |Feb. 12, '07|Mar. 6, '07|
| | | | | |
Rock |Bottom heading | 98+39 | 98+17 |Mar. 6, '07|Mar. 15, '07|
| | | | | |
Mixed |Rock cut | 98+17 | 95+68 |Mar. 15, '07|July 30, '07|
| | | | | |
Rock |Middle heading | 95+68 | 94+61 |July 30, '07|Aug. 21, '07|
| | | | | |
Mixed |Rock cut | 94+61 | 93+56 |Aug. 21, '07|Oct. 3, '07|
| | | | | |
Rock |Middle heading | 93+56 | 92+73 |Oct. 3, '07|Nov. 11, '07|
| | | | | |
Mixed |Rock cut | 92+73 | 90+55 |Nov. 11, '07|Feb. 13, '08|