_Pumping Plants_.--The pumps at Coyote and Luna are Nordberg duplex,
cross-compound, condensing, crank-and-fly-wheel machines, with 6-in.
plungers, traveling 600 ft. per min. at full normal speed, and designed
to work against 300 lb. per sq. in. They have a guaranteed efficiency of
135,000,000 ft-lb. per 1000 lb. of steam at 150 lb. and superheated 75
degrees.
The boilers are 125-h.p., Sterling, water-tube, with Foster
superheaters, and 33-in. stacks, 100 ft. high.
Each plant is in complete duplicate pump and boiler units, only one set
working at a time.
The pump building is a substantial concrete, brick, and steel structure,
50 by 80 ft. in plan, with a fire-wall, with two steel doors dividing
the floor space into an engine-room 50 by 50 ft., and a boiler-room 50
by 30 ft. A concrete coal-bin adjoins the exterior boiler-room door.
Coal is delivered directly from the car to the bin.
The plant is lighted by a small, but very complete, engine and dynamo on
one base and run by steam from the Sterling boilers.
The two plants are exactly alike throughout.
_Reservoir Leakage_.--The Nogal Reservoir basin is covered with from 2
to 5 ft. of good clay, except where it is punctured by a dike, or washed
down to the underlying sandstone by a few gullies.
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