Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 - The Site of the Terminal Station. Paper No. 1157 by George C. Clarke
page 26 of 73 (35%)
page 26 of 73 (35%)
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Fig. 2.--East Pit, Steam Shovel Loading Excavated Material on Car.
Fig. 3.--West Pit, Showing Condition on June 28th, 1905.] _2._--_Retaining-Wall Plant._ Three cableways, with 35-ft. towers of 12 by 12-in. yellow pine timber capable of spanning 350 ft., and operated by 7 by 10-in. double-drum Lambert hoisting engines mounted with 25-h.p. Lambert upright boilers. Five stiff-leg derricks, with masts from 35 to 50 ft. long and booms from 45 to 60 ft. long, operated by 7 by 10-in. Lambert double-drum and swinging gear engines, mounted with 25-h.p. upright Lambert boilers. Six Cameron pumps, varying in size from 7 by 6 by 13 in. to 10 by 8 by 16 in. The first dimension referring to the diameter of the steam cylinder, the second to that of the water, and the third to the stroke. Five Rand sheeting drivers. Two Ransome ¾-cu. yd. concrete mixers, mounted on frame, with kerosene driving engine. Drills drawn from pit plant as required. _3._--Pit-Excavating Plant. One guy derrick, 50-ft. mast and 45-ft. boom, operated by a Lambert |
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