Los Angeles herald. [microfilm reel] (Los Angeles [Calif.]) 1900-1911, 1908-12-28
NEVADA OUTPUT
DURING A YEAR
GOLD YIELD ALONE AMOUNTS
TO TWELVE MILLIONS
YELLOW METAL AND SILVER
COMPRISE HANDSOME TOTAL
Survey Report for 1907 Shows In
crease in Tonnage of All Kinds
of Ore Mined-Economie
Milling

The mines of Nevada produced IN
1907 gold. silver. copper, lead and zinc
to total value of s17591,4S6. accord
ing TO a report by Charles G. Yale,
Just issued by the United states geo
logical survey as part of an advance
chapter from Mineral Resources of the
United states, Calendar Year 1907"
The yield of gold alone was 5S5,31l14
fine ounces, valued at $12,099,455, and
the value of the silver, at the average
commercial price for the year, was
S4,675.17s. The combined value of the
gold and silver was $16,77463S, an in
crease over that of 1906 of s1,767,61s.
Less than 100000 of the state total
came from the combined value OF the
copper. lead and zinc.
There was an increase in tonnage of
ali kinds of ore mined. Out of total
of 7235SI tons 62S, SOL tons were sill
ceous ore. of which Nye county pro-
duced 241.67T tons and Tonopah 214,357
tons. The average value a ton of sill
ceous ore in gold and silver was $25;
of conner ores. $685.; of lead ores, 1886;
y of copper-lead ores. $16.S7; of copper
lead-zinc ores, $25.S1; and the average
value a ton of all kinds of ore was
S2310.
During 1907 the gold and silver mills
treated 436, 779 tons of ore, from which
were saved s2.7S5,634 in gold, or an
average a ton of S6.3S, and 81, 400.039 in
silver, or an average ton of $500;
total value in gold and silver of $4,-
1S5,67S and an average ton of $s.5S.
Tonnage Treated at Mills
From 436. 779 tons treated at gold and
silver mills and from 1860 tons of cop
per. lead and zinc ores sent to concen-
trating mills, q total to both classes of
mills of 453,54S tons, 11,I02 tons of con-
eentrates We're produced. valued at
s445.642 in gold. or an average a ton
OF s3S. OS. and at S739 ,226 in silver. or an
average a ton of S63.17, a total in gold
and silver of S1164S6S, and an average
of S101.25 a ton.
As compared with the statistics for
1906. the figures for 1907 show an in
crease for the five metals of 1875, 645.
The records show production from 229
mines in 1907 of which PIG 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 dninution of ore
shipping in several important districts.
where mines with large outputs now
have their own reduction plants.
'fThe average value of all kinds Of
ore mined in Nevada was very high,
though lower than it was in 1906. The
gradual elimination of the leasing sys-
tenn in some of the great mines OF
GOidfield and other camps caused the
decrease. as these lessees took out the
best available ore only and the COM
panies mine more Systematically and
take the ore as it comes. In many
tinue to work, and in some of the
camps they are doing almost the en-
tire work.
Wish to Reduce Costs
'eThere 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 productive properties foremen
and underground 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 bv experts to ac-
complish high extraction at low costs
and with little waste.
1.-THE metallurgists at the twenty |
stamp mill of the Goldfeld CONSOLIDATE |
ed Mines company have made some re- |
markably successful practical expert !
ments in treating sulphides by cyanide !
at q greatly reduced cost. In fact by |
September 1908, the results accom- |
plished were so successful as to obvi-
ate, probably the necessity of ship |
ping sulphide ores to smelters as each |
mine can treat its own ores for less
than the usual freight cost alone. The |
process employed is chemical, no me- |
chanical appliances being necessary, |
and the plant is very inexpensive"