Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1910-10-06
MINING, BUSINESS AND STOCKS.
GREAT POSSIBILITIES
IN THE MASON VALLEY
Now Has Six Miles Of Workings anu
Thousands OF Tons of Orc
Broken Down.

DlOhSu DONhs
Although the Mason Valley has beer
hard to dcvelop.owing to tho occurrence
Of the ore bodies In limestone, develop
ments during the last six months or sc
have been the most important since
operations began. Some very large orc
shoots are being opened up, one @
which is $50 feet long, As feet wide.
averaging per cent copper. There is
another 1856 feet long with ore In both
faces, 40 feet wide. assaying per cent
copper. a third is go feet long, "a
feet wide at the north. and SO feet
ut the south, the whole stope averag-
Ing 5 per cent copper. says the Boston
Financial News
or the recent developments the most
important has been the encountering
Of ore on the 470-foot level, at a dis
lance of 1896 feet from the main Wine
below the 4O0-f foot level. This ore was
struck after passing through 100 feet
or oxidlzed and lcachcd material, fol-
. lowed by 100 feet Of barren lime. From
this position the drift was turned to
tho east and then TO the north. where
the ore body was encountered. The
WILL "a ONUI w lGGl ~ luC VI u. tp
material Is Of very good grade being
composed of chalcopyrite disseminated
through the gangue Thirty-five cars
from the first 20 feet Of this develop
ment assayed A. per cent per ton. This
2 body Is located nearly directly under
one OF tho big shoots on the 400-foot
level. and connection will be made to
prove the ore continuous. This 470-foot
level Is located 500 feet below the sur
IN ,,,tIn al =
zone on this level points to tho pos
sibillty of encountering the rich sec
ondary ores in depth. It Is the inten-
ton of the management to sink the
main winze and prospect these ore
bodies at greater depth.
ORE RESERVES.
Recent computations OF ore in re-
serve place this figure at approximate
\ ~ 100000 tons. assaying 80 per cent
copper. No estimate OF the ore on the
dumps has been made. but there is
probably $4,000 tons broken, assaying
over 8 per cent copper. Recent ANAL
ysis Of z the ore from the composite
samples show, the material to be
much more desirable; huxing mixture
than was heretofore believed. The new
analysis shows the composition to bsF
rs follows: Iron. 16 to II per cent. lime
~ W 40 sSit SuiplllI TeT cent
and silica SS per cent. The ore IL
practically se1f-fluxins, and II any
only slight additions to the run OF
mine VIII be necessary.
At the mine "a men are employed on
development work alone. placing the
property In condition for the actual
mining OF ore More than six miles Of
development work has been done since
1906, this work being confined princi-
pally to tho three-tunnel levels by
which the property is developed, and
connected workings, The company has
n large amount of territory on the
strike OF the vein, the nearest shoot 4
on the north being $500 feet from the
line. while5o the south 1t is $50 feet
AT THE SHELTER.
at the smelter site the spur from the
southern Pacific has been completed
to within about n half mile OF the To-
cation. Work on this line is being
pushed daily and It should not be Ions
before the stnelter location will be
placed IN railway communication with
already given orders for lumber and
brick, and these will be sent in at
once to the location and tho actual
work OF grading will soon be begun,
The smelter will be of 500 tons capacity.
consisting of two blast furnaces of 400
tons each. A reverberatory battery
and converter plant are now under
consideration. The smelter will also
have connected with 1t sampling mill
having a capacity Of 100 tons per hour,
also machine and carpenter shops, boil
er plant, etc. It is the intention to
treat 400 tons of Mason Valley ore and
400 tons of custom ore daily The COM
pany has contract With the Nevada
Douglas for the treatment of II, 900 tons
of ore per month. It Is expected that
crediting the earnings derived in cus-
toned smelling that the cost OF pro-
tlucing copper will not be more than
8 cents perFpound.