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
page 53 of 93 (56%)

Earth |127 | 615 | 4.84 | |
| | | | |
| | | | |
Mixed | 35 | 70 | 2.00 | |
| | | | |
Rock | 6 | 10 | 1.66 | |
| | | | |
Mixed | 22 | 21 | 0.95 | |
| | | | |
Rock | 9 | 22 | 2.44 | |
| | | | |
Mixed |110 | 249 | 2.26 |Heading advanced to 97+82. |
| | | | |
Rock | 49 | 107 | 2.18 | " " " 94+35. |
| | | | |
Mixed | 43 | 106 | 2.46 | |
| | | | |
Rock | 39 | 83 | 2.13 | |
| | | | |
Mixed | 94 | 218 | 2.32 |Shut down until Line D shields met. |
| | | | |
Mixed | 6 | 11 | 1.83 | |
--------------+------+--------+--------+--------------------------------------+

LINE D, MANHATTAN.
--------------+-----------------+---------+---------+------------+------------+
{|Top heading |107+70.49|107+16 |Dec. 9, '04|Jan. 31, '05|}
{|Removing bench |107+70.49|107+35 |Jan. 1, '05|Jan. 27, '05|}
Rock {|Bottom heading |107+35 |106+80 |Jan. 30, '05|Feb. 10, '05|}