The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, 1904-02-01
Scope of CALIFORNIA; Mining Show at
St. Louis Is Defined.
By LEWIS E. AuBURY. STATE MrNERA1ocIsT.

Nearly all the material for the Cali
fornia exhibit at ST. Louis is now in
this city and arrangements are being
made 70 ship several carloads early in
February.
The exhibit will be divided into two
classes-an outdoor exhibit and that
which viii be placed in the mines
building The outdoor exhibit prom
Uses 10 be very interesting, as it will
eXemplify by working exhibits the diff
ferent milling and concentration
methods pursued in this State. New
types Of roller and stamp mills Will
be shown, and as an illustration of
The PROCESS which has been made in
milling in California, a wooden stamp
mill, erected in 1853. the third in the
state, secured In Shasta County. will
be set up with the modern mills. An
other feature Of early mining methods
VIII also be shown. viz. the system
used in the New Almaden mines when
they were first opened, and which is
IN use al the present time in some
parts Of Mexico. With this method
The ore is carried out Of the mine on
the backs Of the miners in a rawhide
'seron,' or bag, a notched log being
used for q leader.
In the outdoor exhibit will also he
arranged a monitor" used in hv
draulic mining: also an hydraulic
elevator, undercurrents, etc, iliustrat-
ing this class OF mining. Methods of
drift mining viii be illustrated. as
well as the primitive means of saving
gold by the long tom" rocker and
a
its various appurtenances, will also
add 10 the outside exhibit.
THE BUILDING SHOW.
Prominent in the mines bvilding
in the model department will be
shown working model built to scale
Of q modern fVe-stamD quartz mill.
and the various processes through
which the ore passes from the time
IL leaves the mine until il passes over
the concentratOrs, at which point i'm
another model viii be shown the tall
ings being elevated 20 a working
model Of "A cyanide plant which will
fully illustrate this process.
With these models viii be shown a
type Of the modern gold dredge in op-
Grafton; also the latest methods Of re-
ducing cinnabar ores to native mer-
cury- Many other models win also be
shown, illustrating ore reduction as at
The oils Of California will be shown
on an elaborate scale. more so than
has ever been attempted past expo
siticns- and the detailed information
1ich the State Mining Bureau has
been collecting for the past three years
VII be made available. Oils from every
district n the state viii be shown, with
commercial analysis Of each sample;
also OF sands and formations in which
G.. IS found. Miniature drilling and
pumping outfits will also be included
in the exhibit; also sections OF oiled
roads. asphalt pavements and the prac-
teal application OF petroleum and its
by-prooucts in many ways will be ex-
hibited.
Nearly all the material for the great
composite arch which is TO adorn the
main entrance 10 the exhibit has been
collected. and IS now being assembled
ia this city. Granite blocks from Ma
dera, Sacramento. Placer. San Ber-
dino and San Diego counties have been
obtained. COluss. Santa Clara. Solano.
Contra Costa, san Luis Obispo and
Ventura counties have furnished blocks
OF sandstone. Terra Gotta and glazed
brick are supplied by San Francisco
manufacturers. as well as the medal
lions representing The seal of the State
and bears heads.
FL Dorado County furnishes a course
0f slate. Los Angeles the necessary
pressed brick san Diego County pala-