The Owyhee nugget. ([Silver City], Idaho) 1905-1984, 1908-02-28

the limits of Silver City, is another very
fattering new enterprise that has been
undergoing steady development for over
a year through steep incline shaft sunk
on the vein, with levels, the last one at
depth Of 300 feet, which is now being
opened, and sinking is to be resumed as
soon as the drifts are out Of the way
This mine was operated in the early days
Of the camp at comparatively shallow
DEPTH and produced some shipments of
very rich ore. 1t acquired the unenviable
reputation Of containing very refractory
mineral, but from recent practical milling
tests made by the company it would ap-
pear that this was unwarranted, as a so
ton lot was run through local stamp
mill during the past summer that yielded
a very high result of extraction, which it
is believed from the experience gained can
be materially improved
The drift from the shaft at the 20O-foot
level is 465 feet long and carries total of
315 feet of ore shoots that vary from s
inches to 3 feet in thickness, and carry
average values Of $40 to $50 per ton. The
ore is hard crystalline quartz in granite
walls and carries its gold and silver yal-
ues associated with copper carbonates,
oxides and argentite, together with cop
per in sulphide form. The latter variety
is likely to show marked increase as de-
velopment in the lower level progresses.
This vein carries some small pay streaxs
Of very rich mineral and is reputed to
have yielded a 30-ton shipment in its
early day operations that netted thou
sand dollars ton.
While not Of large size, its values and
extensive distribution of ore along the
levels, gives it a very fattering prospect
OF becoming a permanent and profitable
producer. In fact, the ground now open
ed along the course of the vein carries as
large proportion of fertile ore Of similar
average grade for the length of its devel-
opment as does the Trade Dollar near by,
and it is not improbable that ore contain
ing the bonanza values above referred to
may be again encountered in the property
with its further extensive operation.
Besides the Potosi vein, this group car
ries small parallel vein known as the
Knickerbocker, which has the reputation
OF turning out some very rich mineral
from some shallow surface development.
The Star mine, with a record of bullion
production aggregating 81 900, 900, adj
joins the Potosi to the north and made its
richest ore manifestations right up near
the end line of this property, in which di-
rection the development of the Potosi win
be pushed by the management, where
they have good reason to anticipate very
important results.
The Potosi is equipped with a Hendry-
Bolthof, 80 horse power electric hoist,
carrying a 10 horse power overload re-
serve that is run by Westinghouse mo-
tor, supplied with current from the Swan
Falls plant, and gives excellent satisfac-
ton. The company have material on the
ground for building for the installation
Of the small milling plant adjacent to the
hoist, and are expecting to put in ma
chinery and commence the treatment o.
their ores during the coming summer.
This mine is employing a force of L
men and is under the local management
of Mr.. J. E. Masters. It's new bottom
level represents the deepest developed orr
horizon in this part of the Silver City Dis
trict and may prove valuable indicator
and guide to further development at depth
in neighboring properties.
WANTED.