[Fig. 1, Plate XXXV], shows a collection of the tools and arrangements used in laying and rodding ducts. The typical working force was:
| Laying Multiple Ducts. | |||||
| 1 | Foreman | @ | $3.50 | per | shift. |
| 9 | Laborers | " | 1.75 | " | " |
| Laying Single-Way Ducts. | |||||
| 1 | Foreman | @ | $3.50 | per | shift. |
| 8 | Laborers | " | 1.75 | " | " |
| Rodding Multiple Ducts. | |||||
| 1 | Foreman | @ | $3.50 | per | shift. |
| 5 | Laborers | " | 1.75 | " | " |
| Rodding Single-Way Ducts. | |||||
| 1 | Foreman | @ | $3.50 | per | shift. |
| 5 | Laborers | " | 1.75 | " | " |
| The average progress per 10-hour shift with such gangs was: | |||
| Laying multiple ducts | 4,000 | duct | ft. |
| Laying single-way ducts | 1,745 | " | " |
| Rodding multiple ducts | 4,040 | " | " |
| Rodding single-way ducts | 2,532 | " | " |
No detailed description need be given of the concreting of the cross-passages, pump chambers, sumps, and other small details, the design of which has been previously shown. The concrete was finished on June 1st, 1909.
Period No. 6.—Final Cleaning Up.—June, 1909, to November, 1909.—As soon as all the concrete was finished, the work of cleaning up the invert was begun. A large quantity of débris littered the tunnels, and it was economical to remove it as quickly as possible. The remaining forms were first removed, and hoisting engines, supported on cross-timber laid across the benches, were set up in the middle of the tunnel at about 500-ft. intervals.
Work was carried on day and night, and about 169 ft. of single tunnel was cleared per 10-hour shift. Work was begun on May 28th, and finished on July 15th, 1909. For part of the time it was carried on at two points in each tunnel, working toward the two shafts, but when the work in the Weehawken Shaft, which was being done at the same time, blocked egress from that point, all material was sent out by the Manhattan Shaft.
The total quantity of material removed was 5,350 cu. yd., or about 0.44 cu. yd. per lin. ft. of tunnel. The average force per shift was:
In Tunnel.
| 3 | Foremen | @ | $3.25 | per | shift |
| 1 | Hoist engineer | " | 3.00 | " | " |
| 1 | Signalman | " | 2.00 | " | " |
| 38 | Laborers | " | 1.75 | " | " |