Arizona weekly citizen., 1891-08-01
A Brief Description of the Mill aud
Mtne--Valuable Outside Min
ing Properties.

length as great distance as the eye can
compass, viewed from Oracle, would
convey resemblance to the sea in great
commotion-billowsr rising above pillows
and almost as wild, for there is not to
be seen single habita.ion of man 10 the
distance, save an occasional adobe hut
along the San Pedro. But closer in
spection OF this mineral district leaves
no mystery, as surface groupings plainly
indicate the presence of immense ore
bodies underneath.
The Mammoth mine was located by
Frank Schultz in 1881, bought by
Michigan Co. in 1884, and developed un-
der the management OF George n.
Fletcher, who / believe is still a stock
holder. Sometime during 1885 Capt
Johnston assumed the general manage
meut Of the property, which has since
proven signally successful, handsome
dividends having been declared from tins
% time. Judge q. H. Barnhart was a
pioneer in the development Of the mine,
Id during all of the captains admins
;ration be has rendered faithful aud
.fficient service in the pre- secufioa of the
enterprise as the assayer and account
ant. Tie judge is now regarded as
permanent fixture OF Pinal county, hav-
ing fled a homestead on a piece of
Uncle Sans domain, skirting the smil
ing and Truthful San Pedro valley, rs
sumad the cares and responsibilities of
family life, and secured such an over
xhelming majority of the votes of his
fellow citizens for justice of the peace,
that his native modesty forbade his de-
Ginning Of the honors and emoluments Of
the Office.
The present company, incorporated as
the Mammoth Gold Mines, lirhited, with
chief Office in London, secured possession
of the mine in 1889, shortly after which
the 80 stamp mill was increased to it's
present size OF so stamps.
Through the favor Of A. j. Collins,
mine superintendent. had general view
IF the mine, proceeding first to the 400
loot level Qower) By a single COM
partment shaft, by which all the ore is
.xtrat ted. Within 80 feet of the shaft, re
encountered the east vein IL feet wide.
Pursuing the tunnel northwest 160 feet
we came to a winZe, and 800 feet beyond
the tunnel is connected with another
winZe. All the ore taken out along these
tunnels is mllled, there being no waste
except when croSS-cutting. Ascending
to the 300 foot level we find the ledge
still about L feet in width. Here is
noticed l70-foot tunnel, running
south from the shaft, which is being
tim Oered to stope the west vein 10
feet de on the level. One hundred
feet northwest the vein Is %
tt. wide. Near by is parallel vein
from TO 10 fit. wide. Descending again
oy perpendicular ladder TO the $50 fit.
eyel fine body of ore is exposed to
view in the west vein. The vein is 16 #.
vide for one fourth the distance along
the 200 fit. y. W. tunnel. On the 225 IT,
level, 400 IT. from shaft, the east ard
vest veins inter sect, giving a ombined
width OF 30 1t. On the 200 #. level the
intersection makes a width of 40 It.
The west vein is encountered 125 fl.
from the shaft, showing uniform
width Of 10 1t. About equal quaint
ties Of ore are being taken from first,
second and third levels, but there has
been less development work done on the
second than upon either OF the other
levels.
On the 100 TT. level the ledge is 80 #.
wide where the east and west veins IN
tersect.
The uniformity in The width of veins
throughout the mine as we'll as the
quality OF the ore is most rema rkable,
and is one OF the advantages the COM
pany have in making calculations as to
what improvements IN facilities for
operating the mine will be justified by
probable returns.
1There being numerous councillors
from each level, ventilation could not
well be more perfect, and the tempera-
ture throughout seemed to be just
about right for comfort. There being
SO little waste to handle and the ore be-
ing of a character comparatively easy
to work, only 30 men, ali told, are on the
pay roll TO extract 100 tons daily to keep
the mill in constant operation. No
night work is done about the mine, and
all are allowed TO come out for dinner.
Mr.. Collins has superintendent the
mine during over two years past, and it
is spoken To, his credit that not a sin
gle accident has occurred about the
works that could be ascribed in any
way to his mismsnagement. This is
the more worthy of notice when we con-
clnnr thu .Nf honHla6 onA |
timberlng done in the mine.
The mill is on the San Pedro river, at !
the town of Msmmota, three miles |
north of the nine, and all the ore is
transported by wagons, but the COM
pany have under advisement the prop |
osition of either constructing a rail-
road to connect the mine and mill, or
remove the latter to the mine. ..,..t
The engine used is the one that won |
the prize at the Denver exposition, Hen |
engine. The so stamps are fed by the |
Challenge.
There are three powerful rock break |
ers, one of 200 tons capacity. The tanks
hold 10000 gallons of water, the mill |
stamps requiring $4,000 gallons and the |
boilers $4,000 daily.
Do simple duu 51sUcLHhIlC is every
thing arranged about the premises that
but 20 men are employed to transform
into bullion the 100 tons Of ore that
passes the stamps every "a hours, and
which at the end of each month adds
10 the gold circulating medium of the
country in the neighborhood of $4,000,
and about $4,000 OF which, it is estim-
sted, finds it's way into the Golfers Of
Tucson people.
The mine and mill are connected by
telephone, and electricity is used for
lighting purposes in and about the mill.
The mill runs smoothly and with less
,Oiaa TIM uost 10 stRmpere