The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1912-02-29
MINING INDUSTRY Of STATE.
(By R. N. BELL, State Mine Inspector)
LAST CHANCE MINE.

AT the Last Chance mne formerly owned by the Federal
Mining and Smelling company, adjoining the Bunker Hill
ouVan ana now owned by that company result of
slbie compromise which forever settled apex litigation in
which these two companies involved extensive I'M
provemen made during the year. By the of the
compromise between these two companies the
OF this property still retained mined bv the old
owner above certain level and the development the
propry especially the old upper levels of the Last Chance
territory has disclosed bodies in the hanging
wall country of considerable size that promise extend the
life of the operations for time beyond the ancaons
Of the owners when the settlement was made
For the purpose of facilitating the handling of these
bodies which low grade the Last Chance during the past
season. equipped with electric hauage through the
tunnel to the railroad terminus at Deadwood gulch
greatly reducing the costs the former method Of hauling
the ore trans with horses In connection with this equipment
there also has been installed at the portal of the Arizona
mel sorting plant for picking first class and from
the mine products which materially increases the mill feed
and reduces the milling costs by eliminating and
making the first class as straight shipping product
These improvements have proven marked and big
advantage to the Federal Mining company materially
tending the life of this property.
SENATOR STEWART MINE.
Immediately of the sorting plant of the Last Chance
the Senator Stewart mine jumped into prominence steady
and important producer of high grade concentrating and
maintained daily output of between 400 and 800 tons
throughout the year, which shipped to the Mammoth mill
at Wallace for treatment and established record for output
equal to several of the larger producers Of the district
This remarkably interesting deposit includes both north
and northwest courses history of it's develop
ment shows that like several of the famous dividend payers
of the district the fact that in it's upper levels the bodies
small and uncertain in length and breadth Under the
vigorous management Of its present owners however, these
deposits have shown very marked improvement and resulted
in tn Transformation of doubtful prospect of few years
into rich producing mine.
The property is at present operated through ad un
mel driven into the body just below the Sweeney high line
railroad tracks, from this adt incline shaft has been sunk
and three levels out disclosing from
300 to 500 feet in Zenith and to 40 feet in width The prop
erty equipped with double drum hoist of large
pacty during the past year and also developed at
greater depth by long crosscut tunnel driven from Dead
wood guch starting the portal of the Caledonia
tunnel This big working tunnel is being driven by contract
and the contractors have made remarkable record in tunnel
construction by driving this great bore at the rate of $50
400 feet per MONTH The face is the famous Oburn
fault and much slower progress being made by
the softer ground encountered which required careful timber
ing and retards progress This tunnel when completed will
be something like 5000 feet in length and will tap the
of the mine several hundred feet deeper than the low
est level from the incline shaft and greatly facilitate the oper
atoms of the property and reduce the extraction costs