The Eureka sentinel. [volume] (Eureka, Nev.) 1902-current, 1921-10-08
NEW COMBINATION MILL
PROPOSED FOR EUREKA
r. T. Torpey Reports Large
Deposits of Cyaniding Ore
Encountered in Tunnel of
the Uncle Sam Mine.

Frank T. Torpey. general manager
a, the Eureka-Uncle Sam Consolidat-
sd Mining Company, who is here from
Gan Francisco inspecting the proper
~. when asked for news regarding
recent Developments at the mine. gave
the Sentinel the following:
Development at the Uncle Sam
mine during the past two weeks has
proyen up and stripped large deposits
Of high grade milling ore. This ore
recently exposed and found on a cross
Assure or ledge on the Hamburg lode
IA similar to ores formerly obtained
from the Windfsll mine. and from
tests made is q perfect cyaniding pro-
duct with values of approximately
$40 per ton In gold and silver.
Throughout this deposit high grade
lenses of ore are to be found, which
are being upraised on. This cross
assure or ledge. which Mas been
stripped for so feet along its course.
is from seven to ten feet thick and
from all present indications. both un-
derground and on the surface, II
promises to be ore bearing from the
dale line on the east to q distance Of
500 feet westerly into the heart Of
Uncle Sam mountain and extends up
ward to the surface. distance of ap-
proximately 500 feet.
This same cross fissure is now be-
ing drifted on easterly to intersect
the Wade lode which lies next to the
shale line and to which lode a great
part of the former very rich produc-
tion of the Hamburg mine is credited.
This intersection will be made at a
distance from the present face Of the
drift at about SO feet. and It is an
ticipated high grade shipping ore will
be encountered.
The face OF the main tunnel. now
advanced SO feet. Is penetrating an
other similar cross fssure as that
now exposed. and from surface indi-
cations these same ore bearing cross
lodges can be expected at intervals OF
from 80 to SO feet until the end line
is reached. which is distant 500 feet.
Judging from the productions OF the
same lodes in the adjoining Hamburg
mine. a conservative estimate of val
ues above the present tunnel level is
over 100000.
Superintendent States has been in
structed by the company to proceed
with and rush the installation of
power drills In order to facilitate the
present development and drive an
additional parallel working tunnel
along the west side OF the ore zone to
the Hamburg mine end line; also to
provide suitable quarters for a large
force of miners during the Winter
months. and to prepare bins In the
anticipation of the shipping Of higher
grades Of ores until the reduction
plant is installed.
The eompany's engineer. L. e. Ros- |
enshine, an experienced metallurgist
who has been connected in a profess
sional capacity with the Charles But
ters Company Of San Francisco for
many years. has made exhaustive
tests Of the Uncle Sam. Hamburg and
similar ores. and is now engaged in
Designing combination reduction
plant which gives assurance of max |
ing high extraction of all values. 1t
viii comprise the three ordinary prin-
ciples Of extraction-concent
Notation and cyaniding.
It Is anticipated the first unit of SO
tons daily capacity will be ready for
operation by June 1, 1922, operating
on Uncle Sam Company ores.