The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, 1904-10-01
THIRTEEN NEW COLD DREDGERS .
- TO OPERATE IN THE YUBA SAND
River Mining Is: Reduced to the Lowest
Cost in Field Lying Near by .Oroville.
= Old Properties Resuming Development


years expefimenting' with: the ore. and died
about seven years ago without ever attaining
Of. wild excitement, to-day almost but not
wholly abandoned. IFS Dretentious City Hall,
It's crude smelter and numerous private: build
ings have alike long since succumbed to the
leyelns influence OF the mighty snowfalls of
the high Sierras.
PRODUCTION OF OILS.
The State GeoIogist of Indiana. has
prepared a report Of the oil produc-
ton of Indiana, which will interest the
oil producers of California The oil in
dustry is of great Importance to Indi-
ana The output in 1903 was 9,177, 72!
barrels, the average price for which
was 81 IA a barrel, 50 that the market
value OF the quantity mentioned was
$lO,476,S69. Petroleum in commercial
quantities was produced in Indi-
ana first in 1889, when the product
was worth but S10,SS1. Gas and oil are
found in. paying quantities only at
depths ranging from 500 feet to 1900
feet.
The United. States Geological Survey
reports the output of petroleum in sew
eral States in 1903 as follows: CaMfor-
MIA, 24,3S2,47s barrels: Ohio, 20, 4so. 2s6;
West Virginia, 1889, 1875; :Pennsyl-
wanna, 11,$55,156 New York, 1,162,97S
THE MINING MUSEUM.
There are now more than sixteen
thousand specimens of the mineral
products OF California in the museum
Of the State Mining Bureau, in the
ferry building at the foot of Market
street, in this city. One Of the. largest
free exhibition halls in the country is
Wen filed with. the cases that contain
these specimens, and the mineral show
has reached such size that it cannot
ind room in the hall. but a part is in
the adjoining corridors Here is per-
manent exhibit of Californian creation
that is equipped with all possible
guides TO assist the seeker for infor-
matl0n OF a definite sort Every. sam.
pie IS numbered, and descriptive cata-
logues. are convenient for use in which
every sample is described, the num-
'beTs in the catalogues and those in the
cases corresponding The list Of min
erals alone is so long that il has not
been found feasible to have it in one
volume The additions to the museum
average more than a hundred a year.
One volume of the catalogue, the
latest to be printed. contains descrip-
tons of 1000 samples. The others are
in accompanying volumes
The educational value OF this may
be easily perceived In the first place
the museUm is open to the general
public every secular day in the year.
with. the exception Of legal holidays
In the next place, attendants are. pres
ent to supply all possible information
-. Il
in addition TO what they can learn by
an inspection of the samples in the
cases and elsewhere. Recently a large
collection of gold and copper ores, the
contributions Of CalaVeras and Tuol-
uInne counties, has been placed at the
main entrance to the exhibition hall,
guarded from the light fingered but in
easy view of all spectators
Considering that gold is produced in
thirty-fve California counties out Of
'fifty-seven, and that there are $50 spe-
ciic minerals that have been found in
California, it is manifest that there is
variety, as well as abundance, in the
collection that is spread out for the
benefit. Of THE public. The mineral COL
lections are attractive to sightseers.
They show manufactures, miners, capt.
talists and the general public. the quail
ity and character Of the economic min
erals Of. the State and. where. they are
to be found:
Supplementary to the showcases and
the catalogues are county registers,
each of which shows for some particu-
lar county the location of. mines. the
highways that lead to the mines, and
a typographical map is supplied with
each register.
In addition, also, to the mineral spe-
cimens, the registers and catalogues,
there are. many models, maps, photo
graphs, diagrams illustrating the mod.
ern practice Of. mining, milling and
concentrating and the technology Of
the mineral industries exhaustively.
More than $4,000 visitors were in the
Mining Museum last. year who regis
tered. Half as many more saw the
mineral speciments and did not regis
ter! The Mining. Bureau maintains a
library that is supplied with more than
100 current publications. A laboratory
is kept UP for the purpose of Identify
ing for the. prospector the minerals that
he finds and telling him the nature of
the rock walls or dykes that he may
encounter in his workings. In the
draughting- is a large collection
of State and county maps, and in
quiries about the geology or topogra-
ply of the country are there an
swered. State Mineralogist Aubury has
devoted much time and thought to
making these various sources of infor-
nation practical and accessible Sue
cess has resulted largely.