Tonopah daily bonanza. [volume] (Tonopah, Nev.) 1906-1929, 1911-04-21
ANNUAL REPORT
OF The TONOPAH
Mining COMPANY
CONTINUED from page u
Excerpts From superintendent of
Mill 4. II. Parsons.

and equipment of the company
were made under special appropria-
tions.
The approach to the railroad |
trestle at the crushing plant was
originally laid with 5O-pound rails
Two derailments of railway equip |
ment made it seem advisable to use
heavier steel, and accordingly under
appropriation No. -, the 50-pound |
rails were replaced with 65-pound
rails at cost of $1,000.
Inadequate living accommodations
at Millers made it difficult to prop
erly care for employees of the COM
pany holding the more responsible
positions, and, under appropriation
No. Sc, about $1,000 was expended
in erecting a second story on the
house originally intended as resi-
dence for the superintendent. This
second story consists of nine pleas
ant bed rooms with clothes closets
and a large bathroom, and makes a
decided improvement and one APP
preciated by the occupants.
Under appropriation No. 60, 81
500 was expended for the purchase
and installation of four Wiley con-
centrators, replacing five Woodbury.
concentrators.
Appropriation No. GA, for $1,000,
covered the cost of extending the
ore trestle so that it now has a ca
pacity of eleven ears, or one more
than the average daily shipment
from the mine. This addition mini
mizes the switching, and allows the
crushing of the ore to be con-
tinuous operation, avoiding delays
and overtime to employees, previous
ly occurring while waiting for rail-
road switching.
Among the minor changes and
improvements can be mentioned the
removal of ten small classifiers from
the large sand wheel and their in
stallation over the Johnson vanners,
vanner feed; the installation of a
mechanical sampler in the concen-
trate house, to dispense with labor
ious hand sampling; Trent agi-
tor adapted to agitating in fiat
bottom tank, erected in No. 8 slime
tank, providing one more agitator;
No nh frrnn IN nn in 10
assaying furnace, which cut the fuel
consumption for assaying one-half;
the installation of pulp-thick ening
devices in three slime collector watts;
the use of several air lifts fol
handling solution and slime pulp
and several changes in pumping ant
piping arrangements
The longest continuous shut
down of the mill during the yeal
was on July 4th, when twenty-foul
hours were lost. The total time
lost computed from daily record o
battery hours worked back to thu
full equipment of 100 stamps, wa
eleven days The same for tn,
previous year was twenty-five
days This decrease in time lost il
measure accounts for the increas
ed tonnage of ore milled, the de
crease in costs and increase in re
sulting profits
During the year there was mille
and treated 177,745 dry tons of ore
averaging .320 ounces gold an
1855 ounces silver, or $219S pc
ton, which is .007 ounces of gol
and go ounces silver, or $1.O5 pc
ton higher than the average of tn
ore milled during the previous veal
when silver averaged 0021 pc
ounce lower. The total contents {
the ore milled was $500 ounce
gold and 5000. 1884 ounces of 81
yer, with a gross value of 1921
422.26. from which there was II
covered by concentration and shil
ped to the smeltery 1861 dry tor
of concentrates, averaging 5,53
ounces of gold and S0399 ounce
silver per ton, with total col
tents of 7,53765O ounces of gol
and 094,26S.61 ounces of silve
and a gross value of 704,927.7
The entire cyanide treatment yiel
ed in bullion 3,775,547.45 tire
ounces, containing 43,530.2S1 fiji
ounces of gold and 3,6O2,241.(
fine ounces of silver, with a smelt
gross value of $2,S36, 07O.22. tt
Stag and refinery by-products shi
ped to smeltery amounted to II
dry tons, averaging 0.S2S ounc
of gold and 61.59 ounces of silv
per ton, with a total contents
S4.129 ounces gold and 6254.'
ounces silver, of a gross value
$4S6S.O9.
The price of silver dnring Il
fiscal year 1910-1911 averag,
1866 cents per ounce. For Il
previous year the average W
51.5597 cents per ounce, an i
crease this year of 2.O953 cents p