Montana oil and mining journal. [volume] (Great Falls, Mont.) 1931-1953, 1932-07-09

ruglnouH (ironyl veins. couraing
north 10 degrees west, and dip-
ping SIS degrees west 70 vertical,
occurring in a country rock OF
altered magnetism argiilaoeous
rock (dioite porphyry The
gold was recovered by amalxa-
I nation IN crude arrastraa when
first brought into Mexico By the
spaniards, the arrastra wna sim
ply q heavy stone attached t. a
horizontal wooden arm boltsd to
vertical post in the center Of
q carefully Fitted stone floor.
The ore with a small amount Of
mercury (quicksiIver) was shov-
eled into the floor. and q patient
mule was hitched to the arm and
furnished the power to grind
the ore between the stone and
the floor. At the end Of the day
a clean up" was made, the anal
gam squeezed out through canvas
and saved for the final 'sretort-
ing Of the gold, which was
shipped 30 the United States mint
After the discovery Of the gold
lodes Of California the grinding
stone was replaced by heavy iron
rollers. and the stone floor gave
way to a sectional iron pan. Many I
OF these amalgamating pans were
transported across the mountain
ranges on mule back. They were
usually operated by water power
from nearby stream.
Several Mills Running
Intoxicating and BIacker in
stalled q Postlewaite steam stamp
mill for Is stamps weighing $50
pounds each, dropping s inches,
so times per minute, crushing 20
.ons per day The mill had a low
'attery, inside and outside ANAL
plates. An arrastra was !
lsed for additional recovery on N
he stamp mill tailings. The yield I
'er ton OF ore on this new min
vas reported to be $50. and the !
early profit $4,000.
1szI--A two-foOe vein SIS to t
20 per ton in gold was discov- a
red on the Pennsylvania Men t
ion is made Of the Left Hand III
elm crossing the Heating Keat- 7
lg and BIaeker bought the Ohio C
nd Leyiathan mines. Clancy and n
'avis operated the General Wash d
urn, Don Juan and Morning Star 10
roperttes. The Northeast RIGA, p
idden Treasure. Leopard, Iron a.
lad, Mammoth, Robert q. Lee, d,
anderbilt, Allen Congress. John d
pear, Live Yankee and Moore
ampbelI are listed as producers. ~
addition to Keattng and Black "a
mill, the Davis mill OF ~ q,
amps, and the Allen mill Of
amps were operated BY steam
Swer; Nave brothers stamp mill
stamps and an arrastra, and
Ow and Woods s-stamp min and
rastra were run By water e
'wer The total capacity az
all mills was Sc tons daily, OF
ID the production for the year
Is reported to be 5000, 900 from pr
e lode mines and $50. 600 from
g placers. op
1sz24,o14 tons Of crude ore ~
sre taken out Of the Heating. iea
1szs-Keatfug ana Blacker re- 'e'
rted an annual profit OF s4O,-
o to $4,000 for several years aus
st. SIN
Mineral Statistics was dis
ntinued shout 1875, and no
ia was found shout the min 10
3 industry OF Radersburg till err
, annual report Of the director 81
me mint for the year 1880, n
len the production Of the camp snl
reported as s14. 400. Appar- tei
tly, after the Oxidized ores 20
re exhausted. the attention Of an
) miners WIS diverted to the au'
ighbcrfng camps Of Corbin and
lcRes, which were opened at -
put this period. with the es- --
'lisAment Of smelting plants
these new camps. shipments
ore were made from Raiders
~ fha ..~rn-a - asr