The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1907-12-29
UTAH COPPER co.

The largest copper producing prop
erty in Utah today is unquestionably
the property of the Utah Copper COM
pany. ID. c. Jackling. the general man
ager of the company, and one OF the
big men i'm the western mining country,
controls d proposition IN the mine and
mill belonging to the company that is
probably unequaled in this part of the
west Mr.. lacking has stated recently
that the output of the mine for the cur
rent year will amount TO about 15,00O,-
600 pounds of copper. This, however,
is but the average for the year that is
closing, and for the past few months
the production has been on an average
about 5000, coo pounds a month. or 3S,-
OO0,O0O pounds annually.
The new Garfield mill was placed in
commission last August. and at present
seven sections of the mammoth plant
are in operation and treating about
| 5000 tons of ore a day. Plans have
been ,ade so that the capacity of the
plant can be readily increased as the
capacity can be run to 5000 or 10000
tons a day. The Copperton mill, oper-
ated by the Utah Copper company fur
Their down in Bingham canyon, handles
about 1000 tons of ore daily, and the
ores from both mills are treated by the
smelter at Garfield, where the metals
are reduced to bullion form. The con-
centrate product carries copper values
of about 80 per cent. with associated
values in gold and silver.
The Big Mill.
There are few finer or larger mills
| in the entire west than that of the
! Utah Copper company. The mammoth
| building is 600x600 feet in size, with
it's superstructure of structural steel.
The sides are of corrugated iron, and
the floors of concrete surfaced with
cement. The floors are arranged in
steps slOping downward to give the
| drainage required. Excellent lighting
arrangement has been provided by big
| light wells in the roof of the main
| building.
The crushing department consists of
rolls, screens and Chilean mills set in a
/ broad alley running the length of the
/ building. This alley IS cleared for the
/ travelling of a powerful overhead crane.
The function of this latter device is
! interesting. It has no other purpose
| than to be ready to lift from its place
any one of the machines or any part of
/ the machines on either side Of this alley
that may get out OF order, and substi-
! tute a new one in its place. The ore,
/ on being brought in from the mine at
! Bingham, comes in at the back of the
mill, passes over a scale and is dumped
] into bin of immense size. On top of
/ this bin are three rdiIway tracks. The
! Bit. is of wood with its sides built up
it'll plank laid twelve inches wide at
| the bottom and tapering off 10 a mar
rover width at the top. The coarse
crushing departments are in front of
| the bin, two in number, each having
! 1900 tons daily capacity. The ore re-
ce.ved from the mine is dumped into
| huppers connected with the two crush
ers. that is, as long as the railroad de-
! livers 5000 tons Of ore Gay the crush
ers handle it with the regularity of
clockwork. In two passageways under
| the bin large electric larries are oper-
ated. When it is necessary to take ore
| from the reserve portions of the bin,
/ it is drawn off through gates, operated
/ by compressed air, into the larries
which tram it into the boppers, from
which the breakers are fed by gravity.
/ Each coarse crushing division has two
/ No. 71A Gates breakers, reducing the
ore to 15 inch size. The breakers de-
! liver the ore to two Pinch belt eieva-
tors, which in turn deliver to trommels
with 05-inch perforations. the over
| size going to two sets of 2Ox54-inch
rolls, provided with rolled steel tires,
as are all the rolls in the mill These