The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-10-03

and are said to be very valuable The
ownership has been acquired by the
Northern Idaho Exploring company,
which Is reported as intending to work
the deposits on consid cradle scale.
The Mammoth mining company of
Utah has posted the regular September
dividend. The amount was fixed at
$40, 900, or 10 cents a share. This makes
the fifty-second distribution since the
Incorporation of the mine. the total
amount paid the stockholders being
S1,510.O00. 1t is payable on the 4th--to-
morrow.
For the reduction and concentration
of the ores of Clear Creek county there
are two sampling works al Georgetown,
three at Idaho Springs. and for the ores
that do not go directly to the smelters
there are "a plants for concentration
and amalgamation. One Of these is To-
Gated at Georgetown, at Fall river one,
Ute creek one, Dumont one Chicago
creek two, Yankee Hill three. and at
Idaho Springs 22 1t will be seen that
these works form an important part
of the county's industries and afford
employment to large number of peo-
pie.
A Boston electrician is quoted as say
iilS EleCtTOlySlS is playing nigh
jinks with the iron pipes in all the
cities, and in few years from now the
water pipes will become so weak that
they will burst every time any pressure
is put on them on account of being cor
roded by the action of the powerful
currents. / will venture the prediction
that seven years from now nothing will
be used for underground pipings Of all
kinds where high pressures are carried,
except glass"
Sulphide ores may be roasted either
before or after pulverizing, though the
results of lump roasting are not as per-
feet as when the ore has been previous
ly pulverized. When ore requires roast
ing preliminary to charging in a cupola
furnace the difficulty occasioned by
feeding finely pulverized ore to the blast
furnace is overcome by Staging, the
pulverized ore in the roasting furnace
For this purpose long furnace is con-
structed. the heat increasing as the fire
end is approached. The ores must be
mixed so as to form a charge which
will Stag readily, The pasty mass is
Withdrawn from the furnace into pots,
cooled and broken into Jumps, in which
condition 1t is charged to the blast fur
mace
The determination of ''ore in place"
by the measurement of its cubic con-
tents should be made with care; 10
cubic feet to the ton only applies to
solid quartz rock, which may contain
a nominal percentage of sulphide or
ether heavy mineral. In lead, zinc and
other base metal mines this basis of
determination is unsafe. as it requires
less than 13 cubic feet to make ton
where these heavy ores are abundant.
Some oxidized ores are very porous and
relatively light. At the Tiptop mine,
in the Lava Beds district. San Bernar-
dino county, California, the ores of the
upper portion of the mine required
more than 20 cubic feet to the ton in
place. and much of this ore contained
60 ounces of silver per ton In Calico.
in the same county, the gangue of some
of the veins is heavy spar and requires
much less than 10 feet per ton.
The rich and diversified resources of
Chaffee county, Colo. are thus gratuir
ously eptomized in a recent issue of the
San Juan Miner: '"This fraction OF the
state is keeping pace handsomely with
the other divisions of the common
wealth 1t has undeveloped resources
Its precious and base metal deposits
have only been scratched in a few
places. About all the mineral varieties
the earth is heir ito are found there.
Development and treatment are the
questions of the hour The genius of
man must unfold these possibilities.
Large beds of copper await develop
ment. Gold. silver. lead and iron
abound. Great Lodges of the finest
limestone in the world crop out in her
foothills. Immense water powers run
to waste within her borders. A few
hundred people have gone out into a
dozen districts of the county and claim
they have got something. But as a
rule they have only disturbed the rock
and gravel here and there, and have
drawn on their imagination for the
results. They talk of Molybdite, wolf
ramite. cerussite, sidecite bsmut!e,
and a dozen other ties, but it is results
the people are looking for. All these
things are in Chaffee county, and many
more, but the people haven't the ability
to dig them out and make a CONNER
cial product of them.