Eureka daily sentinel. [volume] (Eureka, Nev.) 1871-1887, 1874-12-03
ACTIVE OPERATIONS TO Be
RESUMED NEXT SPRING.

its basis OF supplies, however,, Is ElkO,
distant q miles from the town of
Bullion, the business center of the dis
trict. The principal mines are located
in a crescent lire around the miners
camp, called Highland, two miles to
the southwest of the first named
place. They may he classified in
Lead and Copper Mime~.
The latter contain principally silicate
of copper, comparatively speaking a
poor copper ore, yet desirable tor
fluxing purposes, with subordinate
quantities of the different carbona;es
and oxides of copper, and hardly any
! precious metals. The ores occur in
| segregated veins or deposits in a dolo-
mite limestone, and form sometimes
! networks uf considerable extent, a> in
the instance of the Ella mine, once the
, most noted of the district. 1t seems,
however, that the working of the
! copper mines has not been attended by
very gratifying results, for the ship
pingO OF copper ores has ceased entirely,
aud but few of the mines are being
developed now.
At the present time, miners and OPP
orators have concentrated their a'ten-
ton upon the development of the lead
mines, and, it is to be hoped, with bet
ter success.
The ores Of the lead mines form len
t:cular masses, At or near the contact
of the crystalline limestone with Il
dioritic porphyry and con-i>t ofcarbon-
ate OF lead, and of Salena which occurs
either in solid blocks or is
Disseminated In Ribbons
Through the country. rock. Their 9th
er mineral associates are silicate OF cop
per, rcd copper-ore, brown and cal
careous spar, which give the ore a re-
fractory character. OF the precious
metals only silver is found IN the ore
in greatly varying quantities, ranging
from Is to $50 ozs. per ton. The prin-
cipal mines worked are the Last
Chance and EikO Tunnel, belonging to
the Empire City Company. OF New
York, and the WebfOOt and Tripoli,
owned by A.. j.. Roul>tOne Il Co., of
San Francisco. Both companies W
smelling works in the town of Bullion,
with furnaces similar in pattern to
those OF this place. only smaller, so rs
to adopt them to the lesser productivity
of the mines.
AS before stated the ores OF railroad
District bcar Il rcfrac, DRY character on
ccount efthc copperand the carbonate
Of lime and masne>ia they contain.
For a successful reduction by smelling
it is therefore necessary to introduce:
Firstly, the proper quantities OF sui
phur-bearing ingredients into the ore
to effect n complete separation of the
copper from the lead; and, secondly,
sufficient silica and oxide of iron to
form. with the limss'one'of the ore, u
Stag of the required huidity.
Daring the Thirty.one bays
OF the Empire City Co.'S furnace, from
October 10Th till November 18th, the
| first of these conditions could only be
partially met at the expense of a large
portion of the lead which vas onse-
quenlly lost in the Stag. As there j.
no want of quartz and iron ore in the
district, the tultiluent of the second
condition did not present any diilicul-
ties. Although the furnace Of the Fan
pire City Company is a small one, with
three tuyereS and Il hearth-area Of six
square feet only, it smeited, with the
aid of u Roots blower. No. 1, IS IONS of
ore and Il tons of huXes, equal to fl
tons of material, in "a hours.
In all, there were sInelted in the
, course OF days, 23.5 tons of assorted
galena, 1891 Ions of Second-class one,
6i2.S tons of screenings, from the COM
pany's mines; in conjunction with 33.3
IONS quariZose carbonate OF lead ore.
SIS tom traciitic rock in lieu of quartz,
IS ions carbonate ore rich niron. l2S.l
tons hematite or red iron ore, 240.7 tons
impure Stag, and with a consumption
of % 2j2 bushels of charcoal and 56,-
557 pounds of coke.
The result therefrom MAS l27.S ten
of lead bullion, - tons OF skimming>
alloy of COZ per with lead-and 1853
tons of matte containing "A per cen
lead, IS per cent. copper and oS ounces
of silver. This Was
The Only Run
The Empire City Company made dur
ing the year. The furnace will be pro-
vided with water boxes, and next
Spring started up again, with coke
only ~ a fuel.
The WebfOot Company made but
m small run of s or 10 days, during
which 100 tons of ore we're reduced,
yielding 341a tons of bullion of an a!
legged silver value Of $40 per ton. 1t
is the intention of this company to
make another run as soo AS iron
Pyrites can be procured to reduce the
skiinmingS accumulated. Ii.