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THE WORLD
CHART NO. IV
No.
Name and Location
Ownership and Nation-
Production
ORE DEPOSITS AND ORE RESERVES
PRODUCTION METHODS
TRANSPORTATION
on
of Mine or Produc-
ality of Controlling
Year
Flasks of
Geological and Mineralogical Notes and Ore Analysis
and Plant Capacities
Labor Employed
Map
ing Area
Capital
76 pounds
and Other Data
CALIFORNIA (Cont'd.)
15.
Reed Mine
Bradley Mining Co.
The mine lies on a northwest trend-fault between
40 ton rotary furnace.
25 miles west from
United States Control.
serpentine on the southwest and the Knoxville for-
The mine is capable of continuing
Monticello, 25 miles
mation on the northeast. The silica-carbonate rock
production for several years.
east from Lower Lake,
reported to occur along the edge of the serpentine
Yolo County.
acts as the enclosing rock for the cinnabar deposits
and follows a fault zone ranging between o and 100
feet wide and extending for a horizontal distance
of more than a mile. Ore averages 0.5% - 0.65% Hg.
16.
Mt. Diablo Mine
Bradley Mining Co.
The deposits are in fracture zones near the foot-
Mine developed by an adit and a
on the eastern slope
United States Control.
walls of serpentine masses in Franciscan rocks. Ore
winze sunk to a depth of 165 feet.
of Mt. Diablo about
zone is 4,000 feet long, 5 to 15 feet wide, 60 to
Two levels below adit, one at 80
10 miles southeast of
65° dip. Meta-cinnabar is the primary ore mineral.
feet depth other at 165 feet.
Concord, and 4 miles
Other constituents of the ore include cinnabar,
Mining is also being carried on
east of Clayton,
marcasite, pyrite, quartz and fragments of country
by open pit and glory-hole
Contra Costa County.
rock. Reserves are small.
methods, 2 rotary furnaces, a
California Prod.
new D retort and condensing unit
recently installed
1938
12,277
1939
11,127
17.
Knoxville Mine
George E. Gamble of
1940
18,629
Ore deposits are roughly pipe-like in form and ex-
Mine developed by 2 shafts and
Total production
28 miles east of
San Francisco.
1941
25,714
tend to a depth of more than 500 feet. Ore is cinna-
underground workings. D-retort
120,000 flasks,
Lower Lake in the
United States Control.
1942
29,906
bar and meta-cinnabar in black silicified serpentine
and rotary furnace of 30 tons
fourth largest mine
northern end of
1943
33,812
and Knoxville shale. Ore averages 0.1 - 0.2% Hg.
daily capacity.
in California.
Wapa County and 21
1944
28,052
Mine essentially worked out and abandoned except
Opened in 1862.
miles west of Monti-
1945
21,199
for remnants of near-surface ore. Dumps largely
cello, Wapa County.
1946
17,782
exhausted.
18.
Oat Hill Mine
H. W. Gould and R. A.
Cinnabar occurs in at least 10 separate veins and
Mine developed by 21 miles of
9 miles southeast of
Hanan.
is also disseminated throughout the adjacent zone
underground workings with a
Middletown, on The
United States Control.
of highly altered sandstone, particularly below
vertical range of 875 feet.
Livermore estate,
the footwall of the faults. The country rock is
Plant consists of 4' X 64'
Napa County.
kaolinized Franciscan sandstone. Ore averages
rotary furnaces.
0.1 - 0.15% Hg. The ore in the Osceola-Fanny and
Humbolt areas is practically exhausted. The Eureka,
Manganita, Mercury and Minnesota vein areas are
caved or abandoned but could be reopened.
19.
Falcon or Santa
Falcon Mercury Mine
The ore deposit is in a sheet-like body of silica-
During dry season ore is mined
Acute labor shortage
Ynez Mine
Corp.
carbonate rock which lies along the northwest-trend-
by power shovel from open cuts on
in 1943.
7 miles northeast
United States Control.
ing fault in one of the lenses of Franciscan rock.
hill. Wet season from 2 tunnels
of Santa Barbara on
The ore shoots are small, irregular and tabular.
in hill. Ore is trammed to jaw
north slope of Santa
Cinnabar is the ore mineral. Ore averages 0.1 -
crusher at mill, then is fed by
Ynez mountains.
0.25% Hg. Reserves: 500,000 tons ore indicated.
Cottrell feeders into 3 rotary
Santa Barbara County.
furnaces; 30 tons, and SO tons.
Other equipment: compressors;
1 Universal 1/8 yd. power shovel;
2. 4 ton trucks; 1 - 2 ton truck;
1 P-4 bulldozer; stopers-jack-
hammers, etc.
CONF DENTIAL
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"ocrText": "THE WORLD\nCHART NO. IV\nNo.\nName and Location\nOwnership and Nation-\nProduction\nORE DEPOSITS AND ORE RESERVES\nPRODUCTION METHODS\nTRANSPORTATION\non\nof Mine or Produc-\nality of Controlling\nYear\nFlasks of\nGeological and Mineralogical Notes and Ore Analysis\nand Plant Capacities\nLabor Employed\nMap\ning Area\nCapital\n76 pounds\nand Other Data\nCALIFORNIA (Cont'd.)\n15.\nReed Mine\nBradley Mining Co.\nThe mine lies on a northwest trend-fault between\n40 ton rotary furnace.\n25 miles west from\nUnited States Control.\nserpentine on the southwest and the Knoxville for-\nThe mine is capable of continuing\nMonticello, 25 miles\nmation on the northeast. The silica-carbonate rock\nproduction for several years.\neast from Lower Lake,\nreported to occur along the edge of the serpentine\nYolo County.\nacts as the enclosing rock for the cinnabar deposits\nand follows a fault zone ranging between o and 100\nfeet wide and extending for a horizontal distance\nof more than a mile. Ore averages 0.5% - 0.65% Hg.\n16.\nMt. Diablo Mine\nBradley Mining Co.\nThe deposits are in fracture zones near the foot-\nMine developed by an adit and a\non the eastern slope\nUnited States Control.\nwalls of serpentine masses in Franciscan rocks. Ore\nwinze sunk to a depth of 165 feet.\nof Mt. Diablo about\nzone is 4,000 feet long, 5 to 15 feet wide, 60 to\nTwo levels below adit, one at 80\n10 miles southeast of\n65° dip. Meta-cinnabar is the primary ore mineral.\nfeet depth other at 165 feet.\nConcord, and 4 miles\nOther constituents of the ore include cinnabar,\nMining is also being carried on\neast of Clayton,\nmarcasite, pyrite, quartz and fragments of country\nby open pit and glory-hole\nContra Costa County.\nrock. Reserves are small.\nmethods, 2 rotary furnaces, a\nCalifornia Prod.\nnew D retort and condensing unit\nrecently installed\n1938\n12,277\n1939\n11,127\n17.\nKnoxville Mine\nGeorge E. Gamble of\n1940\n18,629\nOre deposits are roughly pipe-like in form and ex-\nMine developed by 2 shafts and\nTotal production\n28 miles east of\nSan Francisco.\n1941\n25,714\ntend to a depth of more than 500 feet. Ore is cinna-\nunderground workings. D-retort\n120,000 flasks,\nLower Lake in the\nUnited States Control.\n1942\n29,906\nbar and meta-cinnabar in black silicified serpentine\nand rotary furnace of 30 tons\nfourth largest mine\nnorthern end of\n1943\n33,812\nand Knoxville shale. Ore averages 0.1 - 0.2% Hg.\ndaily capacity.\nin California.\nWapa County and 21\n1944\n28,052\nMine essentially worked out and abandoned except\nOpened in 1862.\nmiles west of Monti-\n1945\n21,199\nfor remnants of near-surface ore. Dumps largely\ncello, Wapa County.\n1946\n17,782\nexhausted.\n18.\nOat Hill Mine\nH. W. Gould and R. A.\nCinnabar occurs in at least 10 separate veins and\nMine developed by 21 miles of\n9 miles southeast of\nHanan.\nis also disseminated throughout the adjacent zone\nunderground workings with a\nMiddletown, on The\nUnited States Control.\nof highly altered sandstone, particularly below\nvertical range of 875 feet.\nLivermore estate,\nthe footwall of the faults. The country rock is\nPlant consists of 4' X 64'\nNapa County.\nkaolinized Franciscan sandstone. Ore averages\nrotary furnaces.\n0.1 - 0.15% Hg. The ore in the Osceola-Fanny and\nHumbolt areas is practically exhausted. The Eureka,\nManganita, Mercury and Minnesota vein areas are\ncaved or abandoned but could be reopened.\n19.\nFalcon or Santa\nFalcon Mercury Mine\nThe ore deposit is in a sheet-like body of silica-\nDuring dry season ore is mined\nAcute labor shortage\nYnez Mine\nCorp.\ncarbonate rock which lies along the northwest-trend-\nby power shovel from open cuts on\nin 1943.\n7 miles northeast\nUnited States Control.\ning fault in one of the lenses of Franciscan rock.\nhill. Wet season from 2 tunnels\nof Santa Barbara on\nThe ore shoots are small, irregular and tabular.\nin hill. Ore is trammed to jaw\nnorth slope of Santa\nCinnabar is the ore mineral. Ore averages 0.1 -\ncrusher at mill, then is fed by\nYnez mountains.\n0.25% Hg. Reserves: 500,000 tons ore indicated.\nCottrell feeders into 3 rotary\nSanta Barbara County.\nfurnaces; 30 tons, and SO tons.\nOther equipment: compressors;\n1 Universal 1/8 yd. power shovel;\n2. 4 ton trucks; 1 - 2 ton truck;\n1 P-4 bulldozer; stopers-jack-\nhammers, etc.\nCONF DENTIAL"
}