smelting
of crude ores and concentrates, 6,083,877 ounces came from lead ores,
2,569,157 ounces from dry or siliceous silver and gold-silver ores,
2,377,946 ounces from copper ores, and 1,358,311 ounces from lead-zinc
ores.
WASHINGTON.
Gold.—The
gold production of Washington in 1911 was $847,677, against $788,145 in
1910 and $426,094 in 1909, and was the largest output in the last eight
years. The output and increase are mainly to be credited to the
Republic district, of Ferry County. This county produced $778,526 in
gold in 1911, against $714,808 in 1910. The output of the Republic
district alone was $772,874 in 1911, against $713,604 in 1910, and
$209,114 in 1909.
Silver.—The
silver output of Washington was 243,781 fine ounces in 1911, against
205,345 ounces in 1910. The production is mainly from siliceous
smelting ores from Ferry County and copper and lead ores from Stevens
County.
WYOMING.
Gold.—The
production of gold in Wyoming in 1911 was $19,200, against an output of
$3,199 in 1910. Of this production $12,159 came from deep mines, almost
entirely from sdiceous ores, and $7,041 was derived from placers. The
copper ores of Wyoming yielded only $257 in gold in 1911, and there was
no production of lead, zinc, or mixed ores. The chief gold production
of Wyoming was from 3 deep (gold-quartz) mines and 5 placers in the
Atlantic City or South Pass district of Fremont County. A dredge was
erected in 1911 on Bighorn River, near Shoshone, in this county.
Silver.—The
silver production, mainly from copper ores, declined, with the
decreased copper output, from 1,478 fine ounces in 1910 to 725 ounces
in 1911. An interesting feature of recovery of valuable by-products
from Wyoming copper ores in 1911 was the output of copper concentrates
containing platinum and palladium from the Rambler mine in Albany
County.
PHILIPPINE ISLANDS.1
Gold.—The
gold output of the Philippines in 1911 was $192,248, against $154,430
in 1910. The output is mainly from gold-quartz ores and from placers.
Dredging in southeastern Luzon has been a source of relative importance
in recent years, although the total production by dredging has been
somewhat disappointing to date. The gold output of the Philippines may
be expected slowly to increase from quartz mines and dredging.
Silver.—The silver production of the Philippines was 900 fine ounces in 1911.
NUMBER OF PRODUCING MINES.
The
following table indicates the number of mines producing gold and silver
in 1911, divided into placers and deep mines. The placers are those in
which gold, the silver in natural alloy with the gold, and
1
Figures for the output of the Philippines in 1911 have been kindly
furnished by the Governor General by cable through the courtesy of the
Bureau of Insular Affairs, War Department.
