The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1918-01-03
Inspector of Mines
Review of Industry

Continued from Page -
100 per cent. This has induced the
study and application, where under
ground conditions warrant, of shrink
age methods of stopping The change
in ore markets during the year have
been that the now important output
of clean lead-silyer ore produced by
the Hecla Mining company is all mar
keted at the new Bunker Hill & Sulli-
van smelter at Kellogg and the pro-
duct of the Hercules, Tamarack &
Custer Consolidated mines, is treated
at the nearby Northport smelter in
Washington, which is operated by the
Day brothers, the same interests that
controlsthese two big lead silver prop
critics.
The Tamarack & Custer was idle
during the early months of the year
but has been in successful operation
since July and is expanding into one
of the important sources of lead silver
ore in the district. 1t completed q
splendid and new mining plant and
new aerial tram two miles long con-
nected directdly with the Frisco mill
on Canyon creek which was purchased
from the Federal company about a
year ago and has been rebuilt and is
now in successful operation and CIV
ing splendid results.
Passing of Two Famous Mines.
Two famous bonanza resources of
clean lead silver ore of Occur d'Alene
history are about to suspend opera =
lions due to the apparent complete ex-
haustion of their ore bodies. These are
the Mace mines, known under the sew
eral titles of Standard Mammoth
Green Hill Cleveland companies, COW
ering single ore channel that has ex-
hibited a vertical range of 5000 feet by
1000 to 1900 feet in length and has
been one of the districts noted pro-
ducers of silver and lead for thirty
years,
The Last Chance mine at Wardnel
has been mined down to it's converg-
ing litigation limits at the Kellogg
tunnel and worked back again to the
surface and is rapidly becoming un-
profitable and likely to suspend oper-
atoms at an early date.
outside of the Occur d'Alene dis.
trict the Idaho Continental mine neal
| nil oh al hia yrnr
adverse transportation and power dis
advantages made a splendid produc.
ton of about so cars of clean lead
silver concentrates and crude ore ant
closed the year with bigger ore ton
mage resource developed than it hat
to start with.
In central Idaho, near Elk City, thu
ORC Grande Mining company complet
ed the erection of a 30O-ton daily ca
pacity all-slime process cyanide mil
for the practical testing out on sub
stantial scale of the values of a grea
zone of sheared granetic gangue sew
eral hundred feet wide, that it Is be
lieved by careful hand samplng wi
carry an average value of $3.50 pc
ton in gold. The formation is sol
and lends itself admirably to roug
selective mining by steam shove
methods, and the management be
lieves that with careful handling tn
values can be held up to SO per to
and the success of this pilot mill wi
1lot af rIa, r
q, several thousand tons daily capacity
In the same county and about 4
miles further south at the Marsha
Lake district, the Holt mine wa
steadily operated with a new 25-to
mill and is reported to have made
gross production of gold aggregatin
over quarter of a, million dollar
from a vein two to five feet wide CIV
ing average battery feed values of 5;
per ton in free gold and a considerab
amount of very rich concentrates.
At Boulder Creek, near Silver Cit
>. in Owyhee county, a concentratln
mill was built of 100 tons capacity b
the Demming Mines company, for TT
treatment of the ore resources of
series of strong fissure veins in graz
lite. the best developed vein Is frol
to 10 feet wide and exhibits an OF
shoot nearly 800 feet long that is sal
to average $25 per ton in gold and 81
). yer combined in a fine disseminate
of arsenical sulphide in hard whit
quartz.
At the Star mine on Wood river
}. $50 ton concentrating mill was built
r year ago by the Federal company
I Wallace, has undergone several moo
r ifications and changes in an effort
reduce the very complex lead-zinc orr
. that the property carries and some d
R cided progress in saving has recent
been made.
The Federal company recently az
/ ouired in the same vicinity, the Ind
pendence mine. This property is on
4 parallel vein to the Star and carries
sharply contrasted ore affording cruz
/ ore shipments and concentrates
clean galena mineral free from Iii
1 and other sulphides carrying 60 p
cent lead with 100 ounces silver al
4 several dollars in gold per ton
Copper in Custer County.
A. MaclSav in Custer county, Il