The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1912-01-22
MOTHER MILL IN
SERVICE At TONOPAH
|burtI1 Reduction Plant Is Up
to-Date and Has Capacity
of 70 Tons.
COST 100000
ew MacNannara Plant Will
/ Supply Long-Felt Want
in District.

byobablv bv the time the Bonanza
L.,.s its readers the new MacNamara
III, rbjch has been In course of con
E,e,Ion since the latter half OF last
hr will have commenced on the re-
Elton Of ore and started on long anu
eccssful run
rhe min was practically completed 4
ek ago since which time n NUMBER OF
perimental runs have been mace ID
Ter that NECESSARY adjustments couIo
Eperfectcd and the numerous bearings
ycn chance TO wear even. tests nave
h been made OF the new skip, belt cen
rors, elevators and rock crusherss Wltn
/ result that everything is now work
as smoothly as a clock, and from
tsent appearances there seems 10 pe
reason why tur many months 10 come
IRE should be any cessation OF opera
h except for Cleanin9.up purposes;
, The new Mcnamara plant, as has becn
rstofore stated in the Bonanza, con-
Us OF a ten-stamp mill Of Williams &
salmer'S design. n Dorr claSslher, ~
venty-ton per day capacity tube mn,
IN all the other tanks. watts, aGitaIors
b paraphornalia that so 10 make UP a
kf-cIass and up-to date stampage nDu
hnIding Treatment; the kind that has
IN so essential and been found so sue
-ssful In the manipulation OF I3nopali1
es. And with the experimentation OF
4. the. other Tonopah mills to guide
unm, the management Of the MacNamara,
- copceivinc and constructing Its plant,
9s overlooked nothing that would make
1rr greater percentage Of saving
lin the construction of the plant there
been a vast expenditure OF money
pbably close TO s1Oo.o00-but the re-
~. It's that win obtain will surely justify
J" spending of that sum only the best
material and machinery has been util-
1ped and nothing has been sighted that
jhpuId serve to cut down the expense OF
wer and tend TO the automatic work
..k OF the whole plant Every piece OF
XAchinery in the plant is run by separ-
motor. In every tank and vat there
Ahb three or four passages for the flow
-,Iwater, in order that unnecessary lift
~" may be done away with. and big
secured. And. bcst OF all. human
-erSN is economized and given greater
E by the allowance OF plenty Of room
Il which the men about the mill car
From start 10 finish. from the time the
p leaves the mine. enters the mill. Is
1shcd. the extraction secured and the
stal bars comc from the smelling fur
pc, the details have been worked out
kh geniuS-lilSe precision and reflects
greatest credit on Joe Joseph the
heral manager OF the MacNamara
.hpany. and bis able superintendent
rbert Haas. The plant is a monument
Ithe zeal OF one and the intelligence oi
other
70 give detailed account OF the work
r. of the plant would MI q couple OF
res or more OF the Bonanza, so tho
owing brief description will suffice;
tarting from the different levels o
Izi mine the ore is dumped into n two
self-dumping skip. is then holsted T.
.ppl capable Of holding $50 tons, bull
- IN the top. OF the head frame. Theme
the trummel screens, where the frs
Ing occurs. II is then carried by tn
Alking belt 10 The rock breakers, from
4 pch the bucket elevators carry IL 4
4 distributors that surmount the bins
ftep thence 10 the feeders into the tw,
rIsP- stamp batteries. When crushed b!
-mesh screens. IL passes through tn
Er .clasisficr into the 72-ton tube mill
In which point, when the proper de
-fe of sizing is attained, IL is In par
len back Ia the classifIer, Then Il
uRf slime vats. from which II is lifte'
: centrifugal pump to tho Dorr thick
er tank, which is situate at the high
point In the mill: then by gravit
INC agiiattne watts, tho gold and sill
tanks anG into the zinc boxes, iron
rrsuch The zinc Shavings are later ex
'-tcled. and placed into drying pans
Thence 10 the furnace, from whic
BIDS. ""' ~" '"'
uipped and prepared 10 handle a prod
Tnn nl about 20 tons a day. or approXi
-Fter 1000 tons per month. but wft
addllion OF another classifer an
Ape MIL for which floor space ha
Afn reserwed. and which will be prob
~ Installed within the next two O
Nte months, and done without an
Epens,on OF work. except 10 make In
--pneeuons. II will have capacity c
ltr loo IONS per DAY. Concrete founda
ap1c installation OF another flve-stann
uery' and no doubt this will he arldc
~ the near future. To carry off ir
BsiinRs N-flumc has been consiructe
E0P runs TO point near the old grave
d' where the debris ia deposited.
H8V or the prevention of fire every pr,
Hon has been observed. At reguls
FionS and ON every floor plugs ha,
> II placed and hose apparatus has bee
pA tche1 thereto. thereby reducing II
LID EibiIi'r of an extensive fire 10 a min
%. b supply the mill for the next fe
IAMsE the orc dumps on tho surface, whiS
,xsxY about ~ 400 tons Will bo attack O
With the commencement Of work
mine, which began Yesterday wi
employment OF two shifts OF miner
lhs expected that enough ore viii
lWurcd from the upper levels TO keep Il
"'t;..,,IH H'lhHlHS away TOR lpI
without rcsortlng further 10 Il
1acs reserve. Work has also been r
Rfd In tic 700 aud s00-foot levels
mine, where immense lodges cxi
where some big shoots of pay o
,oeen opened up- Later on the sha
pe sunk To greater depth In II
Nv mat other lodges viii be found
II N"'nt lower down,-Tonopah Bonanz
g0Po not allow your kidney aud bla
53I trouble to develop beyond IL
j. en OF medicine Take Foley Kidne
-. s' They give quick results and stc
Rularitles with surprising promp
sehramm-J ohnson, Drugs. "Tl