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Bureau of Mines / Minerals yearbook 1951
Year 1951 (1954)

Dettmer, Philip B.
Gold, silver, copper, lead, and zinc in Idaho,   pp. 1477-1497 PDF (2.3 MB)

Page 1477

Gold, Silver, Copper, Lead, and Zinc
By Philip B. Dettmer
COPPER was the oniy metal of the five nonferrous metals to show an increased
output in 19~51 (3 percent). This was due chiefly
 to the opening of the Blackbird-Chicago mine in Lemhi County by the Calera
Mining Co., which ackled 295,000 pounds recoverable copper to the State copper
total, as well as a substantial quantity of cobalt. Lead, zinc, silver, and
gold—the principal metals mined in Idaho—each declined in 1951
output. Lead production dropped from 100,025 tons in 1950 to 76,713 tons
in 1951, a decline of 23 percent; zinc from 87,890 tons in 1950 to 78,121
tons in 1951, a decline of 11 percent; silver from 16,095,019 ounces in 1950
to 14,748,188 ounces in 1951, a decline of 8 percent; and gold from 79,652
ounces in 1950 to 45,064, a decline of 43 percent.
 The total value of the five metals produced in 1951 was $70,953,653, an
increase of only 1 percent despite advances in market prices of copper, lead,
and zinc. The total value of the gold output was
percent); copper, $1,045,440 (2 percent); lead, $26,542,698 (37 percent);
and zinc, $28,436,044 (40 percent). The State remained the largest producer
of silver in the United States and was exceeded only by Missouri in lead
production and by Montana in zinc output. About 92 percent of the State silver,
87 percent of the copper, 92 percent of the lead, and 96 percent of the zinc
came from the Coeur d'Alene region of Shoshone County; the remaining silver,
lead, and zinc came largely from the Warm Springs district of Blaine County,
and the remaining copper from the Blackbird district of Lemhi County.
 About 44 percent of the State gold output in 1951 came from the Yellow Pine
mine in the Yellow Pine district, Valley County; the remainder came largely
from a lode mine in~ the Middle Boise district, Elmore County, and dredging
operations in the Yankee Fork district, Custer County, and the Boise Basin
district, Boise County.
 All tonnage figures are short tons and "dry weight"; that is, they dO not
include moisture.
 The value of the metal production reported herein has been calculated at
the prices given in table 1.

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