The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1910-02-11
SOME FACTS ABOUT
UTAH COPPER MINES
Eastern Firm Out With State
ment Covering Many
Details.
IMPROVEMENTS TO BE
MADE IN NEAR FUTURE
Small Increase i'm Metal Prices
Means Much to Com
pany Earnings.


and Boston present the following peril
pent facts, in a statement on Utah Cop
per, issued recently by their firm;
"The property of the Utah Copper COM
pany. Including Boston Consolidated. is
situated in Bingham Canyon. twenty-siN
miles southwest OF Salt Lake City. Utah.
TIE mineral holdings. aggregatng ap-
proximately $50 acres. comprise two
mines-a suphide. which produces direct
smelling ores high in gold and silver
values, and n porphyry mine, which con-
tains an enormous tonnage OF low-grade
concentrating ore. and constitutes the
company's principal asset.
THE company operates three concen-
traitors having the following daily rated
capacities. Garfield. 1000, Boston. 5000,
and Copperton, 500 tons. The first two
J are located at Garfield on Great Salt
Lake and the last named in Bingham
Canyon, The mines and mills are con-
nected by the Denver & Rio Grandc
Western railroad
Owing to the topography and occur
renee OF the disseminated ore bodies at
, the Utah Copper companys property. il
I Is possible to mine them by steam shovel
cost over the usual underground method
Under this plan of operation the mine
/ resembles huge quarry, with railroad
tracks extending into the ore body. where
large steam shovels, working In benches
one above the other mine and load the
ore into cars at one operation.
Steam shovel mining In the past had
been carried on in the upper portion of
the ore body adjacent TO the Gaping.
Owing to the imnosslbility Of preventing
certain amount of waste overburden
becoming mixed with the ore, the ma
terial sent to the concentrator has been
OF considerably lower grade than the
average OF the reserves. This decreased
the metallic contents and resulted in
smaller Weld of
he possible when working on average
grade material. During the next two
years, With deeper mining, the cappiing
should be gradually eliminated, resulting
In an increased production OF about IL
per cent at no increased cost.
Ore Reserves,
THE developed ore reserves OF the
Utah Copper property, including the Bos-
ton Consolidated. amount TO 127.oOo.oOo
tons, assaying approximately IL per cent
copper. This enormous tonnage is un-
equaled among the mines Of the world
AT the present rate of production There
ore alone. The above figures do not in
clude the probable reserves nor the
blocked out ore In the sulphide mine.
'The ores from the porphyry mine arc
concentrators, while those from the sui
phide mine are shipped. together with
The concentrates from the mills. TO the
American Smelters Securities company's
Garfield smelter. with which the Utah
company has low treatment rate. The
Garfield smelter is situated only short
distance from the Boston and Utah mills
The Garfield concentrator, rated at 5000
tons, and the Copperton at 500 tons daily
capacity. are together treating approXi-
marely 5000 tons The Boston mill, rated
at 1900 tons dav, is treating 27o0. MAX
ing total tonnage treated. daily OF TO-
$50. The porphyry ores are well adapted
10 concentration and an extraction of
between Go and 20 per cent is made with
n ratio OF concentration OF from eighteen
to twenty-five tons to one,
THE Utah Copper company contem-
plates a 80 per cent increase in the ca
pacity- Of its Garfield and Boston plants.
which will make possible a production OF
$50, 000, 900 pounds per annum. 1t Is eN-
pected that these improvements Will be
completed and in full opera ton during
1911. The first copper of the Utah Cop
per company was produced In April, 1904,
when the Copperton plant began opera
tons 1t was not until July, 1907, how
ever that the first section OF the Gar
field concentrator went into commission.
Boston Con.
Had the copper produced during the
past year been sold at the average price
received for the metal for the preceding
eighteen months (from July l, 1907. TO
December 81. 1909. IL would have resulted
IN earnings per share OF S3.16- as COM
rared with S2.lT share per year for the
eighteen months period.
1.-THE Boston Consolidated now owned
by the Utah Copper company. has been
a producer from It's suiphide mine for
many years. but II was not until the I
summer OF 1905 that the concentration be-
gan operations on its porphyry ores. The
Utah Copper company is on q regular
90 per cent dividend basis. or at the
rate of So per share per annum- Six dis
bursements have been made. Including
that Of December 81. 1909 aggregatne
50 i60 715