eous,
copper, and lead ores. The Chino copper ores of Grant County are
exceptionally low in their silver content, but copper ores, chiefly
from this county, produced 290,568 ounces of silver in 1912 Siliceous
ores from the entire State produced 1,141,786 ounces, or 74 per cent of
the total.
OREGON.
Gold.—The
gold production of Oregon in 1912 was $770,041, against $633,407 in
1911, an increase of $136,634. The largest yield of gold came, as
usual, from Baker County, whose output was $484,041, an increase of
$94,255. The next county in rank was Josephine, with $76,061, followed
by Jackson with $62,985. Baker County produced $446,207 from siliceous
ores and $37,834 from placers, and Josephine County produced $17,842
from siliceous ores and $58,219 from placers. The total output of deep
mine gold was $580,945 and that from placers was $189,096. Southwestern
Oregon produced $217,565 in gold in 1912, against $188,971 in 1911, and
northeastern Oregon produced $552,476 against $444,436 in 1911.
Silver.—The
output of silver in Oregon in 1912 was 57,081 fine ounces, against
45,221 ounces in 1911. Baker County, in northeastern Oregon, produced
39,140 ounces, a considerable gain over t"he output in 1911. The deep
mines of the State yielded 55,140 ounces, of which 10,555 ounces came
from copper ores and the greater part of the remainder from siliceous
ores.
SOUTH DAKOTA.
Gold.—The
production of gold in South Dakota in 1912 was $7,891,370, against
$7,439,874 in 1911, and was the largest ever recorded from the State.
The total output of gold in South Dakota from 1875 to 1912, inclusive,
has been $170,634,838. The yield is wholly from siliceous ore and the
greater part of this is low-grade, milling, amalgamating-cyaniding ore.
Mining and metallurgical practice of highest grade have been
characteristic of the successful operation of South Dakota gold mines,
particularly of the great Homestake mines and mills of Lawrence County,
which have produced the bulk of the output. The Homestake mines and
mills were operated continuously in 1912, and, with the exception of
the Mogul mill which was burned in March, all the other large
properties were continuously operated also. The dredge at Mystic, in
Pennington County, made a slightly increased output.
Silver.—The
silver production of South Dakota in 1912, mainly from refining gold
bullion, was 206,460 fine ounces, against 203,755 fine ounces in 1911.
SOUTHERN APPALACHIAN STATES.
Gold.—The
combined gold production of Alabama, Georgia, North Carolina, South
Carolina, Tennessee, and Virginia in 1912, was $222-496, against
$159,361 in 1911. North Carolina maintained the lead with$166,014 in
1912, against $70,282 in 1911, followed by South Carolina with
$16,915, Alabama with $16,724, and Georgia with $14,360. The output was
mainly from gold-quartz ores and placers, in both of which North
Carolina led in output. Tennessee contributed the bulk of the small
yield from copper ores.
