Weekly Arizona journal-miner., 1904-07-27

II was the privilege of a journal
Miner reporter during the past week
70 nav a visit to the Grown King mill
and see the new plant in operation
The mill was started up on the 10TH
of July and Notwithstanding the I'M
mense amount of machinery every
thing has worked satisfactorily from
+he first minute it started up. Like
all mills. a few little changes ana
roodinstments we're necessary to get
things in perfect working order, out
there has been very little even OF THIS
70 do in the Crown King mill. The
,Iant as il now stands, has a capacity
of 100 tons per each "a hours, out
o,orvtbinp has been so satisfactory
that the management has decided 10
mako some additions that will IN
crease the capacity of it to at least lou
tons per day, and force OF carpen-
ters has already been put to ~orK 10
make these additions.
The present plant was lnstalleu
for the express purpose of treating
the tailings dump from the ola
Crown King mill, but it is the IN
tention of the company in the future
TO install large stamp mill IN addl-
tion to the present plant, as soon DIS
the old taiIings dump has been
cleaned up, which with a mill having
a capacity of $50 tons per day run
ming at full capacity, will take over
a year. there being between 1000 and
go. 600 tons of tailings in the dump.
When it is further calculated that
these tailings average in value De-
tween SD and SIG per ton something
of an idea of the magnitude OF this
proposition alone may be had.
when the old mill on this famous
property was in operation years ago
they we're unable to handle concen-
tratAs that went below S57. 90 per ton
on account Of the great expense IN
TRANSFORMATION, it being necessary TO
mack them on burros for 90 or 6O miles
ovar mountain trails and then to
fraipht them for long distances before
they could be shipped to the smelter
for treatment. This combined with
the fact that they we're unable to con-
centrate the ore any closer with the
machinery they had at that date, on
account of the presence OF zinc In
the ore. and the expense OF another
concentration, will account for the val
mes left in the tailiDgs dump, which
are a fortune in themselves, amount
ing in ali close to 500, OOO.
About q year and a half ago, when
if became an assured fact that the
railroad would be completed to Crown
King. Geo. F. Shurtleff organized a
comuany under the name of the Grown
King Mines company, for the purpose
of working this old tailings dump,
tbav believing that with the modern
methods for handling this kind of a
proposition, they could make a good
business proposition out of it. The
+ailinps we're secured and the work OF
entirely remodeling the old mill and
putting in the necessary new mach
ipeIy was started at once and has been
going ahead ever since until few
weeks ago everything was completed.
In the meantime the railroad had
been completed and passed within a
few feet of the mill, and the plant was
started as above stated.
AS much of the process in use is ne"
in this section. and some Of 1t new t.
the mining industry, the journal
Miner will give q somewhat detailed
description of the workings of th1
plant as seen by its reporter during Z.
stay of a hours at the mill.
\ tunnel has been run into the tai
ings dump. which lies to the norti
west of the mill, and in this tunnel a
belt couveyur has been placed. Ov,'
the couveyor Is grizzley aLa q
this crizzley is dumped the tailiDgs
from scrapers. 1t is then transferred
onto another belt conveyOr which
carries the tailings into the top of the
mill where they are dumped into
bins. From these bins they are dis
charged into a Jeffrey dryer. This
consists of seven large steel tubes
about ten feet long and fifteen inches
in diameter, there being seven OF
these tubes arranged one below the
other and all connected so that the