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 50 of 93 (53%)

Mixed |175 | 392 | 2.24 | |
| | | | |
Rock | 27 | 63 | 2.33 | |
| | | | |
Rock | 40 | 91 | 2.28 | |
| | | | |
Rock | 55 | 131 | 2.38 | |
| | | | |
Mixed | 28 | 49.4 | 1.76 | |
--------------+------+--------+--------+--------------------------------------+

LINE C, MANHATTAN.

--------------+-----------------+-------------------+-------------------------+
| | Station: | Date: |
| |---------+---------+------------+------------+
| | | | | |
Material. | Method. | From | To | From | To |
--------------+-----------------+---------+---------+------------+------------+
{|Top heading |107+79.03|107+69 |Dec. 20, '04|Dec. 27, '04|
{|Top heading |107+69 |107+23 |Jan. 1, '05|Jan. 15, '05|
Rock {|Excavating bench |107+79 |107+23 |Jan. 21, '05|Feb. 28, '05|
{|Bottom heading |107+23 |106+72 |Mar. 1, '05|Mar. 11, '05|
{|Bottom heading |107+23 |107+15 |Oct. 12, '05|Oct. 27, '05|
{| | | | | |
| | | | | |
Rock |Bottom heading |107+15 |106+62 |Nov. 6, '05|Dec. 2, '05|
| | | | | |
| | | | | |