The Eureka sentinel. [volume] (Eureka, Nev.) 1902-current, 1909-01-02
NEVADA HAD A BIG YEAR
Government Experts Issue Very
Interesting Report on the
Sagebrush State

The mines OF Nevada produced in 1907
gold. silver. copper. lead and zinc to a
total value of $i7, 591, 1856, according to a
report by Charles q. Yale, just issued
by the United States Geological Survey
as part Of nm advance chapter from
Mineral Resources Of the United States.
Calendar Year 1907"
The yield of gold alone was $50. 3l1.14
fine ounces, valued at $l2, 099, 455. and
the value of the silver at the average
commercial price for the year. was
a. $40, ITS. The combined value Of the
gold and silver was SIC. IA. 633, an in
crease over that Of 1906 of 81. 767 .6l9.
| Less than 81. 1000. 900 of the State total
| came from the combined value Of the
copper, lead and zinc.
There was an increase in tonnage OF
all kinds of ore mined. Out OF a total
| Of 1913, 5S1 tons. 62S. 50l tons were
| silicious ore. Of which Nye County pro-
duced PAL ,677 tons, and Tonopah 2l4,'
357 tons. The average value per ton
of silicious ore in gold and silver was
$25; of copper ores, $685.; of lead ores,
So SO; of copper.lead ores. 1857; OF
copper.lead.zinc ores. $25 81; and the
average value per ton Of all kinds OF
ore was $23. 10.
During 1907 the gold and silver mills
treated 436, 100 tons of ore. from which
we're saved 81. 7S5.63 in gold, or an
average per ton Of s6.3S, and sl,4o0. 039
in silver, or an average per ton OF -. 20;
a total value in gold and silver oil
"a, 1856. 673, and an average per ton OF
$9.5S.
From 436, 779 toni treated at gold and
silver mills and from 1860 tons OF
copper, lead and zinc ores sent to con-
e~ntrating mills. a total to both classes
of mills of 453, 34S tons, IL, 702 tons OF
concentrates were produced. valued at
S445, 642 in gold, or an average per ton
of s3S. 0S, and at s739. 226 in silver. or
an average per ton of $63. II, a total in
gold and silver Of 81. lS4,S6S, and an
average of s1O1. 25 per ton.
As compared with the statistics for
1906, the figures for 1907 show an in.
crease for the five metals of 81, 1916. 645.
The records show production from 229
mines in 1907. of which 2l6 were deep.
as compared with 154 mines in 1906, OF
which 142 were deep.
In his review of the progress of the
mining industry in Nevada in 1907 Mr..
Yale makes the following statements:
There is a marked diminution Of ore
shipping in several important districts
where mines with large outputs now
have their W reduction plants. The
average value of all kinds Of ore mined
in Nevada was very high. though lower
than it was in 1906. The gradual elm
nation of the leasing system in some OF
the great mines of Goldield and other
camps caused the decrease, Ia these
~lessees took ont the best available ore
only and the companies mine more
sy scientifically and take the ore as il
comes. In many camps, however, the
l~essees still continue to work, and in
some of the camps they are doing almost
the entire work.
"There is an evident desire at Gold.
field and in other districts to drop the
high pressure conditions Of recent years
and to reduce costs. In some large pro-
ductive properties foremen and under
ground miners are being brought in
from other districts. where they have
become accustomed to the economies
involved in mining low grade ore, in
which there is only a small profit. IN
milling. also. careful study is being
made by experts to accomplish high ex
traction at low costs and with little
waste.
"The metallurgists at the 20-stamI
mill of the Goldfield Consolidated Com.
pany have made some remarkably sue
c~essful practical experiments in treating
sulphides by ~cyandide at a greatly re.
duced cost. In fact. by September,
1908. the results accomplished were SC
successful as to obviate. probably. the
necessity of shipping sulphide ores to
smelters, as each mine can treat its own
ores for less than the usual freight and
cost alone. The process employed is
chemical. NO mechanical appliances
being necessary. and the plant is very
inexpensive"