Table 23.—Mine production of gold, silver, copper, lead, and zinc in
1967, by classes of ore or other source materials in terms of recoverable
metals 
Lode ore: 
Gold                      
 Gold-silver 
 Silver 
 Copper and tungsten ore 
 Lead 
 Lead-silver 
 Lead-zinc 
 Total 29 
Other lode mateiial: Old tailings___ (3) 
 Total lode material 29 
Placer 25 
 14,996 1,489 142,517 1,576,000 3,470,000 882,000 
 32 73 8 
 15,028 1,562 142,525 1,576,000 3,470,000 882,000 
 (4) 39,008 1,990 
162 
MINERALS YEARBOOK, 1967 
 
Material 
 
 
 
 
 
 NumberSource   of mines 1 
sold or 
treated 
(short 
tons) 
Gold 
(troy 
ounces) 
Silver 
(troy 
ounces) 
Copper 
(pounds) 
 Lead (pounds) 
 Zinc 
(pounds) 
17 
2,093 
1,204 
254 
 
 
100 
1 
1 
1,660 
 8 
 87 
  
3,618 
 166 
200 
100 
1,300 
1,200 
2 
215 
42 
20,733 
1,553,700 
 
 
5 
1 
3,317 
 43 
42 
29 
64,769 
3,181 
4,700 
 500 
2,774,100 
 4,900 
153,800 
 100 
2 
7,860 
85 
49,796 
16,800 
689,700 
726,800 
 Total all sources 54 15,028 40,570 144,515 1,576,000 3,470,000 882,000 
 
I Detail will not necessarily add to total, because some mines produce more
than one class of material. 
I Tungsten-ore tonnage not included. 
 ~rom property not classed as a mine. 
 4,408,458 cubic yards. Does not include material washed at commercial gravel
plants to produce 2,393 ounces of byproduct gold and 1,119 ounces of byproduct
silver included in placer totals. 
 
cement facility. Concentrate produced by American Exploration & Mining
Co. at its Iron Age mine, San Bernardino County, was shipped to domestic
steel plants and to customers for use in cement manufacture and for heavy
aggregate. The Kaiser Steel Corp. Silver Lake mine, San Bernardino County,
was idle in 1967 but shipments were made from stockpile to the company's
integrated iron and steel facility at Fontana. 
 
 Lead.—.-As in preceding years, lead production came principally from
Inyo County. Five mines—the Columbia (Shoshone) and Darwin groups of
leadzinc claims, and the Jubilee, Queen of Sheba, and Santa Rosa lead mines—
yielded 94 percent of the total lead recovered. The Darwin property was not
in production in 1966. About 240 tons less lead was recovered from all ores
than in 1966, partly because of labor strikes at nonferrous smelters. 
 
 Mercury.—Mercury production rose by only 315 flasks despite a higher
average unit value but shipments were up 13 percent from 1966, reflecting
a liquidation of producer inventories. Although 78 mercury mines and prospects
were active all or part of the year, only 17 properties yielded more than
100 flasks each. These 
17 mines produced over 96 percent of the State total. The three major producers—New
Idria Mining and Chemical Co., San Benito County; Buena Vista Mines, Inc.,
San Luis Obispo County; and Sonoma International, Inc., Sonoma County—recovered
66 percent of the mercury produced and made 67 percent of the shipments.
New Idria continued as the largest individual domestic producer. Of the 82
operators reporting production and shipments, 15 used furnaces, or both furnaces
and retorts, to recover the metal; 65 used retorts only, and two recovered
the metal using placering methods in the vicinity of the old Oat Hill recovery
plant, Napa County. Most of the mining activity and production was in the
three counties where the major producers were located with 13 active properties
in Sonoma County, 11 in San Luis Obispo County, and 10 in San Benito County
representing 72 percent of the total output. Santa Clara County, where Guadalupe
and Almaden mines are located, was the only other county where combined recoveries
even approached 1,000 flasks of mercury. 
 Two new discoveries were made in 1967, both in the Basin Range province
of eastern California. One, the Last Chance mine north of the Crater sulfur
claims, Inyo County, was opened by El