two-drum and swing-gear hoisting engine, with Lambert 25-h.p.
upright boiler.

Three stiff-leg derricks, similar to those used on the retaining wall
work.

Three Bucyrus, 70-ton steam shovels with 3½-cu. yd. dippers.

One traveling derrick, built with an A-frame of 12 by 12-in. timbers,
15-ft. mast, and 25-ft. boom; the traveler carried an engine and
boiler similar to those used on the stiff-leg derricks, and was
used on the Seventh and Eighth Avenue sewers, as well as in the pit.

Ten Rand-Ingersoll rock drills, Nos. 1, 3¼, and 4.

One Reliance stone crusher (nominal capacity 17 tons of crushed stone
per hour) belt-driven by 50-h.p. engine.

_4._--_Transportation Plant._

During the whole of the first period the transportation plant
consisted of two-horse trucks and snatch teams as needed. The number
varied greatly from 25 at the beginning and end of the period to an
average of 135 from August 1st to December 1st, 1904, about 10% of
the total number of teams being used as snatch teams.

_5._--_Dock Plant._

The only machinery used on the dock during the horse-and-truck period
was one stiff-leg derrick similar in size and operation to those