the
lead-zinc ores 1,199,023 ounces, and the dry or siliceous ores
1,153,993 ounces. The crude ore smelted in 1916 contained 10,536.'
ounces and concentrates contained 2,473,132 ounces.
WASHINGTON.
The
total production of gold in Washington from earliest mining to the end
of 1916 is given by C. N. Gerry, of the United States Geological
Survey, as $26,956,368, and the total production of silver as 6,771,120
fine ounces.1
Gold.—The
mine production of gold in Washington in 1916 was .1577,655, against
$391,419 in 1915. Of the production in 1916 more than 72 per cent was
derived from ores shipped directly to smelters, 25.5 per cent came from
ores treated by amalgamation or cyanidation, and less than 2 per cent
came from placers. Siliceous ores supplied about 93 per cent of all
gold recovered and copper ores about 2 per cent. Ferry County alone
produced $399,376 in 1916, against $351,973 in 1915. Nearly all the
yield from Ferry County was, as usual, from the Republic district.
Silver.—The
mine production of silver in Washington increased from 255,837 ounces
in 1915 to 335,121 ounces in 1916, of which Ferry County produced
138,293 ounces, mainly from siliceous ores, and Stevens County 174,612
ounces, mainly from copper ores.
WYOMING.
The
total production ofgold in Wyoming from 1867 to the end of 1916 is
given by Charles W Henderson as $1,231,342 and the output of silver for
the same period as 65,160 ounces.2
The
mine production of gold in Wyoming in 1916 was $20,566, against $14,592
in 1915, and that of silver 5,524 ounces in 1916, against 840 ounces in
1915. The Seminole and Elk Mountain districts, in Carbon County,
yielded $13,342 in gold and 617 ounces of silver, mainly from siliceous
ores treated by amalgamation
PHILIPPINE ISLANDS.
The
output of gold in the Philippines from 1907 to 1916, inclusive, has
been $6,351,361. The mine production of gold for 1916 was $1,514,200,
against $1,320,900 in 1915, $1,371,514 in 1914, $868,362 in 1913, and
$570,212 in 1912. The mine production of silver in the Philippines in
1916 was 17,643 ounces and was recovered entirely from gold bullion
refined.
NUMBER OF PRODUCING MINES.
The
following table indicates the number of mines producing gold and silver
in 1916 divided into placers and deep, or lode, mines. The placers are
those in which the gold and the silver in natural alloy with the gold
and, in a few placers, found also with platinum are recovered from
gravels and sands, whether by hand wasning, sluicing, hydrau-licking,
drifting (in frozen ground or ancient buried river channels), or by
dredging. The deep mines are those producing gold and silver (from ores
as distinguished from gravels) mainly from underground
I U. S. Geol. Survey Mineral Resources, 1916, pt. 1, p. 603, 1917. ! Hera, p. 277.
