partly
in Juab and partly in Utah counties, produced $953,790 (a large
decrease) principally from dry and siliceous, copper, and lead ores.
The greater part of the Utah production of gold is now from copper ores
concentrated and smelted principally from Salt Lake and Juab counties,
but a considerable production in these counties comes from lead ores.
Dry and siliceous ores from Juab County also yield considerable gold in
smelting. The total output in gold mills by amalgamation and
cyanidation has become very small, and the placer output is now
insignificant.
Silver.—The total output of silver in Utah from 1864 to 1914, inclusive, has been 326,975,152 fine ounces, according to V. C. Heikes.
The mine production of silver in Utah in 1914 v,t.3 11,154,916
fine ounces, against 13,084,835 ounces in 1913. Juab County again
ranked first in output with 4,444,996 ounces, mainly from lead ores,
but also largely from dry or siliceous ores and from copper ores. Salt
Lake County produced 2,629,153 ounces from lead and copper ores in
nearly equal quantity, and Summit County produced 2,418,564 ounces,
mainly from lead ores. Altogether the lead ores of Utah yielded
7,350,213 ounces of silver, the copper ores 1,726,230 ounces, and the
dry or siliceous ores 1,317,364 ounces. A large output came from
concentrates smelted, but the bulk of the production was from crude
ores shipped to smelters. TheTintic district produced4,666,944 ounces
in 1914, mainly from lead ores; the West Mountain, or Bingham district,
2,383,051 ounces, chiefly from copper and lead ores; and the Park City
rnining region, 2,955,008 ounces, chiefly from lead ores.
WASHINGTON.
The
total output of gold in Washington from earliest mining to the end of
1914 is given by C. N. Gerry, of the United States Geological Survey,
as valued at $25,987,294, and the total production of silver as
6,180,162 ounces.1
Gold.—The
mine production of gold in Washington in 1914 was valued at $557,173, a
decrease of $139,102 from the value in 1913. The greater portion of the
production was from crude siliceous ore shipped to smelters, but there
was also a considerable output from this class of ore milled and
cyanided. Ferry County alone produced $513,276 in 1914 against $645,009
in 1913, the bulk of it, as usual from the Republic district.
Silver.—The
mine production of silver in Washington in 1914 was 264,861 fine ounces
against 331,239 ounces in 1913, derived mainly from crude dry or
siliceous ores from Ferry County, but also from copper ores and
concentrates from Stevens County.
WYOMING.
The
total production of gold in Wyoming, from 1867 to the end of 1914, is
given by Charles W. Henderson as $1,196,184 and the output of silver
for the same period as 58,796 fine ounces.2
Gold.—The
mine production of gold in Wyoming in 1914 was $5,006, against $24,184
in 1913. This output came from siliceous ores and placers, chiefly the
former, and was mainly from the Atlantic City (South Pass) district.
. 'U.S. Geol. Survey Mineral Resources, 1914, pt. 1, p. 641, 1915. •2 Idem, p. 249.
