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Volume 055-3 - July 2001 (8 pages)

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Page: of 8

Nevada City, where his wheels were manufactured at
George Allen’s foundry (now known as the Miners Foundry
Cultural Center). In the beginning Pelton’s wheel did not
sell very well—until a side-by-side comparison with three
“> other wheels was made at the Idaho Mine in May 1883. The
superiority of Pelton’s wheel was clearly demonstrated and
from then on the revolution was underway.
The most prominent mine at that time, the Idaho, was on
the forefront in the use of this new technology, as they were
first to contract for a water supply in 1882. For this purpose
the Cascade Canal was extended by constructing the
“Leonard Ditch” to the Leonard Reservoir, very near the
same site as NID’s current reservoir on Loma Rica Drive.
This extension was nearly thirteen miles long, contouring
along to the reservoir at elevation 3160 feet—and then continuing on another mile to the reservoirs of the Grass Valley
Water Company and the Idaho Mining Co. This elevation
was well above the mines, and allowed the mines to obtain
a head of water of 200 to 500 feet. The Leonard is now
known as the Lower Cascade.
William B. Bourn and his associates formed the Grass
Valley Water Company late in 1884 to provide water for the
Empire Mine. The company was, in essence, owned and
controlled by the mining company. A 13,200-foot-long
pipe, 22 inches in diameter, was installed to serve the Empire. Later a pipe was extended to the North Star Mine to
power its Pelton wheels. Of significance there was the use
vem of very large Pelton wheels, 1814 feet and 30 feet in diameter, to power huge air compressors. The North Star Mine
Company acquired the pipe system and reservoir in 1899,
and the Grass Valley Water Company was dissolved.
Steam power in 1893, according to William F. Engelbright, “cost 56 cents per horsepower for 24 hours, calculating 8 hp for a cord of wood, which costs $4.50 per
cord. Water at 134 feet head costs the same as steam, but
most water is available at 300 to 400 feet.” Starting in
1883, the use of Pelton’s wheels spread throughout the mining world. By 1895 there were over 120 Pelton water
wheels used in the mines of Nevada County, replacing over
half the steam-power previously in use. Major Nevada
County mines and the number of wheels in use by each
were the Idaho (18), North Star (10), Empire (6), Nevada
City (5), North Banner (5), Pittsburg (4) and the Charonnat
(4).
The Electricity Era
The Charonnat Mine was the site of another very significant event, which used the water of the Cascade. This mine
was located 400 feet in elevation below the Cascade Canal,
in the vicinity of Little Deer Creek. In fact, the berm of the
little reservoir that served the pipeline can still be seen,
about a five-minute walk east on the canal from Gracie and
Banner Lava Cap roads. On August 5, 1887, at the Charonnat Mine, electricity was first generated in Nevada County,
NCHS Bulletin July 2001
The 30-foot-diameter Pelton Wheel as it was being installed at the North Star Power House. (A. B. Foote photo.)
and delivered for lighting to Nevada City. To celebrate this
great event properly, the 100-volt circuit was extended to
the Glenbrook Fairgrounds and lights were hung all around
the racetrack. This was the site of the first-ever horse racing
at night in the state. The loss of voltage over the two-mile
line was too great, however, and the electrical equipment
and Pelton wheels were moved to a better location at the
Idaho Mine.
Hydraulic mining was greatly slowed down by the
Sawyer Decision of 1884, and eventually ceased altogether.
The Cascade was in the right place at the right time and had
successfully made a transition from supplying water to hydraulic mines to supplying hard-rock mines. This went on
for a decade, or more, but then a new transition was about to
start. The Nevada County Electric Power Company was
formed to build the Nevada “Rome” powerhouse on the
South Yuba River, 3.5 miles from Nevada City and 6.5
miles from Grass Valley. The express purpose of this project
was to serve the mines as indicated by this quote from the
1895 prospectus:
The amount of power now in use in the mines of
Grass Valley and Nevada City is estimated to be in the
vicinity of 2500 h.p., of which about 1000 h.p. is
generated by steam, the balance by water power. In addition to this there are at present idle a large number of
mines which are unable to work on account of the high