Rogue River courier. (Grants Pass, Or.) 1886-1927, 1905-06-16
Michigan Mines New Mill.

There appears to be another side to
affairs at the Michigan mine, for W.
I. Perry, who was member Of the
company, states that so far as he
knows that no stamp mill has been
ordered, and that another trial will
be given the ornsher mill now in
stalled at the mine. The difficulty
arose over the fact that @. G. Pratt,
manager Of the company that built
and is installing the mill, wishing to
give to it short test, after it was
completed two weeks ago, started it
up and run dry ore through it. The
result was that the pad and hood of
the grinder became heated and ex.
panding checked down, breaking a
number of cogs from the gearing.
Mr.. Pratt had run dry ore successfully
through the sample mill they built
in Portland, but the Michigan ore
evidently being harder could not be
run dry. 1t was not the intention of
Mr.. Pratt to operate the mill on dry
ore aud would not have done so, had
the pumping plant been completed
aud in working order.
Mr.. Pratt returned Sunday from
Portland with the repairs to the mill
and new manganese steel pad and
hood to the mill and the pump being
completed and ready to supply the
grinders with water, it is expected
to give the mill full and thorough
trial noxt week. Mr.. Perry states
that the mill, when it was run, more
than met their expectations and ground
much faster and more even than
would quartz mill using the same
amount Of power.
Mr. Perry went to the mine Tues.
day ard returned Thursday morning
and he states that the new parts to
the mill will were put in and the mill
~as put in operation Wednesday ana
run all day. He says it run salts.
faotori ly and ground the ore to the
required fueness and at good speed
and that the grinder did not heat
or give other trouble The oper-
alton of the mill will be continued
until It has been given thorough
working tost
OF the system under which this
mill works Mr., Perry makes the
following statement;
Zone Of the strong features of the
Pratt Mining System is the fact that
no matter how much tale the ore con
aius, the tale is all removed by a
washing system before the ore enters
the mill thereby rendering this dan.
gcrous aud undesirable condition
harmless when treated by the Pratt
System. Another very important ad-
dition to the Pratt System is the con.
solidntion of the Ryan Electro Chic.
ronization system, by which ores of
all GLASSES can be reduced to bullion
ON the ground, and at an expense it Is
claimed, of not to exceed ne.half the
ordinary expense Of smelling So
confident are the Pratt people of the
ultimate revolutionizing effect upon
the mining world by the combined
systems above referred to, that large
capital has beeu interested aud u
syndicate has been formed for the
purpose ol acquiring such AS they de.
sire Of the choicest aud most desirable
we'll deveolacd mining properties now
lying Idle, for the purpose of working
them, as can he done by this system
at a great profit As proof of how
public sentiment is turning in favor
of this new method, 10 is learned that
already another plant has been ordered
and will be installed uIon another
property only short distance from
tho Michigan mine as soon as it can
he manufactured G. Z Pratt Of
Portland, Oregon, patontee Of this
system, will also be interested in the
Pratt Mining Syndicate which is
the one ietrted to above