ARIZONA.
Gold.—The
mine production of gold in Arizona in 1914 was $4,179,155, against
$4,023,911 in 1913. This was the largest production of gold from
Arizona mines to date. Placers contributed $30,140 in gold, mainly from
Yavapai, Pima, and Yuma counties. The deep mines produced $4,149,015,
principally from dry or siliceous ores in Mohave, Maricopa, and Yavapai
counties, and from copper ore in Cochise Countv. Mohave County again
led in output of gold with a total of $1,891,214, followed by Cochise
with $1,014,675, and by Yavapai and Maricopa with over a half million
dollars each. The Tom Reed and Gold Road mines, in the San Francisco
district of Mohave County, and the Vulture, in Maricopa County, were,
as formerly, the largest producers. The copper mines, mainly of the
Warren (Bisboe) district of Cochise County, also were large
contributors. Of the gold recovered by gold milling, amounting to
$2,416,143 in 1914, much the greater part was produced by cyanida-tion.
The remainder of the output was obtained from crude ores and
concentrates smelted, chiefly from the former.
Silver.—The
mine production of silver in Arizona in 1914 was 4,377,994 fine ounces,
against 3,948,091 ounces in 1913. Of this production 2,604,371 ounces
came from copper ores, of which Cochise County produced 1,636,610
ounces, mainly from the Warren (Bisbee) district, and Yavapai County
contributed 479,899 ounces, chiefly from the Verde district. Dry and
siliceous gold and silver ores produced 1,133,976 ounces, of which
Cochise County produced 774,135 ounces and Yavapai County 283,275
ounces. Lead ores yielded 493,226 ounces, of which 339,593 ounces came
from Cochise County and 109,459 ounces from Santa Cruz County.
Altogether Cochise County produced 2,753,953 ounces of silver in 1914,
and again led all other counties by a wide margin. Of the total output
of silver in Arizona for the year 3,280,667 ounces came from crude ores
shipped to smelters, 423,982 ounces from concentrates shipped, and
617,049 ounces from mill bullion, chiefly by cyanidation.
CALIFORNIA.
Gold.—The
mine production of gold in California in 1914 was $20,653,496, against
$20,406,958 in 1913. The increased output was about equivalent to the
greater placer yield, for the production from siliceous and from lead
ores decreased in about the same proportion as that from copper and
from silver-lead ores increased.
The
deep mines produced $11,572,647 in gold, of which the gold-quartz ores
supplied $11,198,841 and the copper ores $343,776. The placers produced
in ad $9,080,849, of which $7,783,394 was con-tiibuted by the dredges,
$702,884 by hydraulic mines, .$329,948 by drift mines, and $264,623 by
sluicing or surface mines.
The
dredges produced nearly 38 per cent of the total output of gold in
California, and all the other placers about 6 per cent. The total
dredge production from 1898 to the end of 1914 has been $71,307,766. Of
the three great dredging fields in 1914, Yuba County produced
$2,755,734, an increase of $335,279; Sacramento County produced
$2,161,653, a decrease of $336,950; and Butte
