The morning news. [volume] (Savannah, Ga.) 1887-1900, 1889-08-22
LISTING IN CALIFORNIA.
Mining, Quartz-Mining and
How 1,.- ~ Bsed-Mining are Conducted

-. aiming. Quartz-Mining and
How - Iaaa5.NIining are Conducted.
40 San FT1goisco Chronicle.
[,..y--,i,;,g which seems TO have gained
-.,,arkable impetus since tle suspense"
Si',s-,--,Iraplic-mining, is conducted as Iol-
o. o., - The prospector having come 10 'he
0"'. that there is a bed or deposit OF
co1I- ,-ariny dirt. quartz, or gravel within
g1u-Oe'- "a certain hill, then seeks
tie reVe9 Nv 10 get at it. If vertical
tue e-s.s tie TOP Of the mountain De
shsi. ~ ths shortest direct ROAD 70 the
eol-,-,, then such a shaft IS sunk- II lh9
Ie15t-r i thought to be the DesO reASHoI
pay Dtt'orizontal tunIel through tne sue VI
.. rIorutain. then such q tuhhel OF u ~ ~
!-r,D with such ramncatlons vi - =
Is luu' NV call for. the ore taken ouI
occas' '-.sd according to its character. IL Is
Is lI'".1u +ivelv cheap form OF mi ing, ana
CON bas be5n found just as remunera-
50 Ia II t,[,,,a,--conb mountain as TO wash
it away -. ,o7, conDarativeIy in its
u = hound 70 assume considerable
-,-,lITenca. II is Of most Importance now
prg M Nevada and Sierra counties. 1t
IL ! 1no 10 a revival, having been pursued TO
I'ool1l,rsiierable extent early In the history OF
a. state and then abandoned TOT tne ny
Sro,,Iic STYLE During the past elghC OF
&c vaars. however, it has Deen resumed
Nth very Satisfactory results, anu IL was car
ried on during the past year WIN , uif.'Sus1i
Ilou ne, Already it has done good deal TO re-
rs Tho nilli6ns added to the annual pro-
I.o.jon If the state under the old system,
S mining will in future years ADD
az ~ millions to the wealth or the
SCOT SCOTT 1-ift-mlning. indeed, is now re-
rarded as about the most saIe ana cor Jam
gaI.lobb Of the business extant. Through
w.. ~ oronlovment of machine drills and more
tio explosives. both the cost and
18th If time required for opening this
Class Of deposits have been greatly reduced.
The engineering difficulties thai Formerly
attended this work have also been mucn
diminished. better acquaintance WIN the
,as;+ion Of the old channels making 1t posi-
ble now TO drive the exploiting tunnels
almost always on the right level.
IRIS class of deposits has come to be
sought after. and where open to location
is sTe.dilv taken up. A vast amount OF
exnioratorv work has been projected and
much commenced, large number OF shafts
and tunnels being in operation. Work
long suspended on partially completed
Structures has been resumed, while
onerations on the productive mines
are being pushed with energy.
Some Of these drift mines already emu
nIoy from 100 to 200 men, their gross yearly
output varying from $150,O0O to 100000.
Most of the claims, however, are operated
with A much smaller working force, the
number of men employed ranging from ten
to fifty the production being correspond
,ingly small. The deposits sought by drift
ing rest for the most part in the dead
river' caunels before referred to.
So far as productivenesS and extent of
operations 60 however, quartz or vein
mining is the leading ranch of the busi-
ness in California, fully two-thirds of the
gold product Of the state being obtained
from auriferous ores. This branch of min
ing, says an authority, is spread over
the entire length and nearly the
entire brerdth Of California, being
pursued to some extent in three
fourths of the counties of the sta g. This
industry employees about 1000 stamps or
their equivalent, some of the crushing being
performed by arrastras, roller mills and
similar devices OF the above number it
may be calculated that $500 stamps are
constantly in active service. Estimating
that these stamps crush ten tons
of the ore per day for 800 days in
the year, there results an annual total of
2,100 900 900 tons Of ore crushed. As this
ore will average nearly 81 per ton, the
yield amounts, at the lowest calculation,
to $4,000, 900 per annum. That this prod
uct will be steadily increased for many
years to come there is good reason to be-
lieve. Nevada, Amador and Sierra remain
the leading quartz mining counties Of the
state, their annual output amounting to
$3O00,O00, 100000 and $1,500,000 re-
spectively.
The new impetus in Quartz-mining is due
to the introduction of improved mechan-
isms, appliances and processes. Through
the use Of these aids the tendency is con
stantly toward the working of poorer ores
and other low-grade material, so much SO
that mines not long since considered worth
less are now being operated with profit.
6oIl-0earlng quartz is now being milled in
TINS state, and made to pay, that yields a
total OF less than 81 per ton, the conditions
IN such cases being, of courts, exception
ally favorable. Then, too. invention is
ever on the rack to discover new means OF
reducing rebelhous ores, the steady result
ant being an ever-increasing output of gold
AGAIN science has been called in and the
extraction OF gold from sulphurets is no
Ponger mere mechanical process. but in.
wolves wasting, treating with chemical
Souuons and other intricate and delicate
corporations known to metallurgists. Many
a mine really depends for its success unor
me adoption Of tue most suitable method
Ior II. dealing with the sulphurets.
Inc interest displayed in river-bed min.
lug Is on the increase year by year. and
promises 10 add materially to the future
puepu1 OF the state. River-beJ mining con
ssls In dlverting the rivers and other large
Streams wholly or in part from heir natural
SSut'IieiS' WIN view TO working the gravel
+ou.u n laeH beds. While this business i.
RN' cue on most OF the larger streams
80, WV mining regions Of California, the
scenes Of the largest operations are
SscoIt' Salmon and Klamath rivers il
-olSkIyou county. This, too, is a revival of
HHoVHer OF our primitive methods of min
MS having been extensively practical here
III early days Their beds having hear
10y wen worked out, many OF the stream,
tbaro . aodnuoHed years ago. Afterward
IL 40 was general return to the business
:. having been found that the beds n,
streams had again become an.
fCueu through the influx of ta,Iino,
, -Si me mines being worked along aSGi
+SrJoceAt 10 their banks Lastly. the ta1linos
80 49, were formerly suffered to rim r.
Cos aIe now saved and treated wifi
4 Tes,it euu rs sometimes highly reInunerative
N draniin, me waste matter from the nv
n las aao,. mines, Which, in many instances
tIe o,e,1a4uiate d Ill great quantitie ALONG
q locaHt;;!eUoIhg channels. is being, in various
II made ~ 3,s squioJected to rewashing anC
mann, : tolu satisfactory wages. In like
being eo tiI;ly OF the old ore dumps ar,
III the iottor S [' over and cuttings reworked
the non, -eIulDg often more metal under
81 tb He" processes than was obtainad f.o'7
'1' VIE at It's first handling. - vi