35th Street and North River 242,800 22,800 281,500
Pier No. 72, North River 673,800 1,488,000 3,203,400
From Cross-town Tunnels 570,400
From Under-river Tunnels 402,500
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Total 4,457,800
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The material was delivered as follows: 

To the freight terminal of the Pennsylvania Railroad
Company at Greenville, N.J. 3,454,800
To the Meadows Division of the Tunnel Line between
Harrison, N.J., and the North River Portals 711,900
To other points selected by the contractors 291,100
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Total 4,457,800
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The handling of this large quantity of material required the loading of from 10 to 20 scows per day (and for more than two years the average was 14), and, as the average time spent in one round trip was 3 1/3 days, a fleet of more than 50 scows was required to keep all points supplied and allow for a few to be out of service undergoing repairs.

All loaded scows were towed from the docks, with the ebb tide, to a stake boat anchored in the bay about one mile off shore at Greenville; and were taken from there to the different unloading points, as required, by smaller tugs which also returned the empty scows to the stake.

The unloading plants were similar at the different points, although that at Greenville was much larger than the others.  It included five land dredges and eight traveling derricks of two types, one floating and the other mounted on wheels and traveling on a track of 16-ft. gauge.  The derricks handled the large rock, which was loaded at Pier No. 72 by derricks and telphers.  They were of the ordinary A-frame type, and were designed to handle 20 tons.  They were operated by 9 by 10-in.  Lidgerwood double-drum and swinging-gear engines.  The large rock was deposited by the derricks either in the channels along which they worked or in the fill along shore, without the use of cars.  The land dredges were equipped with a 60-ft. boom and a 21/2-yd.  Hayward bucket operated by a 14 by 18-in. double-drum Lidgerwood dredging engine.  They loaded into 9-yd., standard-gauge, side-dump cars, built by the contractor, and unloaded the scows to within about 1 ft. of the deck, a Hayward bucket being unsuitable for closer work without greatly damaging the scows.  The material remaining was loaded by hand into skips which were handled to the cars by small derricks, one of which was located at the rear of each dredge.  The cars were taken to the dump and returned by 25-ton, standard-gauge, engines which had previously done service on the Manhattan Elevated Railroad, but were spotted for loading by the engine on the dredge.