Los Angeles herald., 1909-11-18
CONCENTRATOR FOR
MAGISTRAl-
COMPANY BUYS MACHINERY
FOR MEXICO MINE
Los Angeles Investors Prepare for
Reduction of Large Tonnage of
High-Grade Copper Ores
in Jalisco

II. L. Percy, president of the Magis-
tral-Ameca Copper company, with
developed mine in the Ameca district,
Jalisco, Mexico. has returned from
Denver and announces that the COM
pany has bought of the Denver En-
gineering works a complete concen-
trating plant of 200 tons capacity, the
first carload of the machinery having
been shipped from Denver Saturday.
A contract has been made with j. II.
Layton an experienced mill builder
of Denver, to build the mill building
and to transport from the railroad and
install the machinery. The time limit
for this work is four months and Mr..
Percy expects to have the mill run
ming in five months at the farthest'
Four expert millwrghts have been
sent from Denver and will be trans
ferred from Zacatecas.
The mill is of the latest improved
pattern and the process is designed to
effect a saving of practically all the
metal values in the ore. The Concen-
trating machinery will consist Of two
four-inch, compartment Richards
1igs and Elmore vacuum concentrat'
ors. The Richards jigs are the very
latest and best type Of Jigs ana OF
much greater capacity than the o!d
type. The Elmore vacuum process
largest concentrating plants in exist
ence. where its superiority has been
demonstrated. In one Australian plant
thirty-six of these machines are IN op-
Grafton on ores that are extremely
base The ores of the Magistral-
Ameca company are particularly free
containing neither zinc, antimony or
bismuth, and the copper is in conse-
quence of a fine grade, particularly de-
sirable for the manufacture OF me
copper wire.
From the ore bins the ore is passed
over a grizzly. from which the fines
go directly to the first jigs, through a
standard 9x15 Blake Crusher, from
where it is fed into coarse rolls, going
thence to a classifier and on TO n sec
ond set of rolls, thence to the first jig,
where 80 per cent of the values are eN-
tracted, the middlings going to an
other set of rolls and thence TO the sec
ond Jig and classifier. From this Jig
the light particles are carried off by
the solution into Il filter press, the
middlings being classified, the fines go
ing to the Elmore and the coarse to a
tube mill for Tegrinding. a 5Nl4-fOOt
tube mill will be installed. which dis
charges into the feed pipe from the
second jig. to the Gilmore, The mill
will have an immediate capacity of
100 tons or more, which is to be brought
UP to 200 tons by the installation ot
n second ElmoTe concentration, The
moti--e power will be furnished by
twin eighty-horse power high pressure
boilers and a 11X1SX1f tandem COM
pound Ball engine Of the autometic
type. The entire mill equipment will
cost approximately $4,000. The COM
pany has expended $4,000 in testing its
ores and in determining the best pro-
cess for the extraction Of the values
under the supervision Of James p.
Harvey, the general manager, and the
officials are satisfied that they have Sc
cured a system of the very best.
Mr.. Harvey, who has directed the
development of the mine during the
past three years since the Magistral-
Ameca company acquired the property,
has been engaged i'm mining i'm the
Occur d'Alenes. Butte and in Nevada
for eighteen years, and is rated as one
Of the best mine managers in the
west. Mr. Harvey went directly to
the mine from Denver and has n wagon
road completed from the railroad at
Ameca and grading for the mill under
way.
The Magistral-Ameca Copper COM
pany is a Los Angeles concern. fully
30 per cent of the stock being owned
here The mine has been thoroughly
developed and large amount OF ton
mage of high grade copper ore blocked
out Mr.. Harvey, in his report to the
directors, placed the net value Of the
ore reserves from the three veins
which have been worked at $1,144OCO.
In one ore shoot there are 10000 tons
carrying an average Of Z per cent cop
per with about 50 in gold and silver.
The mill was authorized by the diroc-
tors at a meeting held at the com
pany's Office in the Union Trust build
ing on October 5, Mr.. Percy and Mr..
Harvey leaving n few days later for
Denver where the equipment was pur-
chased after a careful Investigation of
the merits of the process, which has
been tried out on the ores from the
mine.
The officers of the Magistral-Ameca
are II. L. Percy, president; James p.
Harvey, general manager; T. L. Lyon,
II. n. Mannington and George c. b.
n ,N,s.