[TABLE 5.]
| Location. | Number of days worked. | Advance. | Average advnce per day. |
| Station 323 to Central Shaft headings | 492 | 1,450 | 4.5 |
| Bench and enlargement of Central Shaft headings | 159 | {1,150* { 906† | 7.2* 5.7† |
| Central Shaft headings to Weehawken headings | 141 | 620 | 4.4 |
* Actual advance.
† Equivalent linear feet of full section tunnel.
The best month’s work in each location was as follows, the actual yardage excavated and paid for being reduced to equivalent linear feet of full section. The tunnels were generally taken out to full section, except for a small amount left in the bottom, which latter reduced the equivalent linear feet of full section to about 95% of the actual advance at the face.
Weehawken.—
| Linear feet. | Feet per day. | |||
| Full timbered section, | North Tunnel | Nov., 1905, | 87 == 3.0 | |
| Sandstone | ” ” | May, 1906, | 109 == 3.9 | |
| Trap (normal) | South ” | July, 1907, | 144 == 5.3 | |
Hackensack (All trap).—
| Linear feet. | Feet per day. | |||
Portal to Central Shaft headings, | South Tunnel | May, 1907, | 139 == 5.0 | |
* Enlargement of headings, | ” ” | Nov., 1907, | 175 == 6.0 | |
Central Shaft headings to Weehawken headings, | Apr., 1908, | 145 == 5.2 | ||
* The actual advance of the bench this month was 202 lin. ft.