The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, 1904-08-01
Collection Exempifes Varied MineraI
Resources of Rich California.
BY LEWIS F. AUBURY.


St. Louis Exposition is in. section II
p of the 1Palace Of Mines and -Afetallur-
81 and near its southwest CORNER. The
exhibit occupies a space :43x1O3. .feet.
At Its entrance a beautiful arch has
: been constructed, WHICH is represent
aUVe- OF the structural materials of
. california THIS aren furnishes, il
The most practical Manner an idea OF
. lle diversity OF building materials 10
b obtained in California. il is IS
zeet high, II feet long 6. feet thick
ana has an entrance. i. feet IN width.
The arch is con1posed of granite.
BRICK tIling, slate and: pressed brick
p ne matei-ial Is from tire following lo-
calitiess
Granite FROM The E.aEnpnd. yguaft.a il Ma
"a counts, .ssntee' 4u-Trg ~ San Diego
= ~ fe-s-n quarry "a sacrament
<--snt4 .l5eciez quarry fREerSide County
, ---.e hee.s-iii quarry 90 Player county sand
-s,oi,e- rom ,-t--e. Z Ccllsa quarry IA Cqiusa
r-- ean2cn quarry ip--.Nsntgra
Col Alarre quarry ~. Solfr5 County. csen
oint 'larr. p S1r6Tna County, contra Costa
. --Iis .tE N-iliga Costa County ami sa1 Jose
s-afrg ia santa Cara County. marble from
lhe Do.-ubla QUefyrs. n THoiuuaHe County.
fellt1n quarry iu san 81 rslarsino Comfy: artf-
s-lal marble from san Francisco. terra cotta
-rcrn san francisco. glaz-giszed brick from
rom ~ Siattngton oliarr, In - i,cs.-,io
: The material Tor the construction Of
tae arch HAS been gathered from
widely. different sources and the selec-
tl1Fn gives no particular section Of the
state and advantage over others.
SOME WORKING MODELS.
After passing through the arch the
.1lslt0r nrst. sees the model exhibit.
Here are arranged a complete work
1ng model Of a fVe-stamp gold quartz
lIllll illustrating California mill prac-
0ces--..A a. tunnel IS shown, from which
? z <carload Of ore IS run 10 the mill and
? the course of the ore can be readily
traced from the time il is run over the
sriZzly down 10 the rock break er
antD the ore bins, to the feeder, and
thence 10 the mortar, where il is
crushed by the stamps, The process
OF ama8gamatng the gold and con-
-'centratiOn OF the su!phurets, together
with other mechanical operations
common TO gold mills, are also shown
Z his mill was built by the Union Iron
Works OF san Francisco and Is eX-
hibited by the California State Mining
Bureau
Adjoining the. mill is a complete
model Of cyanide plant. An elevator
llfus the tailings after they have been
treated by amalgamation. and conceTl-
tFauon into "A bin from. which they
are distributed 10 the teaching tanks.
here a cyanide solution is allowed to
pereolate- through the tailings,s and
most OF the remaining gold not ex-
tracted by milling methods is taken
into solution. From the teaching
tanks the solution is run 10 the zinc
boxes, where the gOld.is .Drecipitateda
The solution being. freed of its gold
contents. u run TO the stump tanks and
IS pumped back to be again used.
With the models the visitor is able "a
fahf Hf "a 81 =
ner OF gold extraction from quartz
The method OF handling gold bear
ing gravel from the drift mines and
the washing to recover the gold cop-
tents Is shown by a model that fully
ILLUSTRATES the practice IN gravel min
4hs operations. Another model shows
p an OH derrick, with complete drilling
rig. Last but not least is an old
rocker used in the early days of Cal
3 llorE1as. which illustrates the crude
lnethpqs in Vogue at that time. 4
number OF mining curios and: -inple-.
l2ellls; used in placer mining are also
shown 81 III is exhibit -.:-'- Z.
J.. n. SHOW. or PETROLEUM.
:. A dJoLning. the model department a
ire authentic collection of California.
petro leum is exhibited. Here are
shown frst the different. geological
SURFACE formations in which petroIe-
Urn is fpunds With these are samples
Of oil -sands. from different districts at
various depths as they were taken
from the wells. Duplicate samples
show the same-sand: after IL has been
washed and freed from its petroleum.
There are included in. the. oil collec-
ton sixty-two samples, of oil which
were taken from representative wells in
all oil producing districts in the State,
and tWenty-four twO-gallop samples
taken from the different districts. With
these are all the different grades OF
refined oils, iilustra ting. the products of
california petroleum. Then there. are
large samples Of natural and refined
asphalt, bituminous rock, California
coal, and coal formations, briauettes.
etc Blocks or sections Of oiled roads
are also on exhibition. In the corridor
% the Mines building is an annex to
the oil exhibit. In this exhibit are
shown an oil tank wagon and white oil
distributor and also distributor man
ufactured at Stockton Both are of the
type used in oiling roads.
In the main oil exhibit is a photo