The Salt Lake herald-Republican. [volume] (Salt Lake City, Utah) 1909-1918, 1910-09-12
MINES AND MINING
CHINO FAR AHEAD
OF ALL ESTIMATES
Results of Developing New
POrphyry Mine Surprise the
Mining World.


Mucn as the officials OF the Chino
Copper company deDIore the cheap and
offensive publicity which has been
given 20 the company's splendid
achievements. they say that they are
pc,vcrless 20 prevent 10. says the Bos-
ton News Bureau. abiding TO the ad-
vertising campaign conducted by
Thomas W. Iawson. 70 has been said
that this advertising has cost the mar
ket value OF the stock at least SO
n is doubtful n this advertising
campaign iz WITH view tor distributing ,
stock al this time. for apparently no
distribution has taken place and the
advertiser 10000 shares stilI lie along
side tho blocks or his associate owners.
The development OF Chino has lar
surpassed the anticipations Of those
who acquired the old Santa Rita mine
from sellers who at one time were in
erS would not exercise their privilege
and take over the property. The limit
Of expectation at the time the explora-
ton work was undertaken by the new
owners a little over year ago was a
10000. 000-ton proposition. Now there
are over $4,000. GOO tons Of indicated ore.
and Instead Of l.000-ton mill. a 5000
ton plant rs being provided and the first
l.uWW-tou unit OF this new plant is eN-
pected TO begin operations within a
year from date.
Few people appreciate the exhaus-
tvcncss to which test OF the ore val
ucs IN quantity as well as quality are
submitted In a proposition OF this kind
before a dollar Of construction money
is voted For instance. the Chino prop
efty TO date has been subjected 90 not
less than los 900 feet Of drilling. and
Tor every three feet OF depth attained a
sample 81 the mud" resulting from the
churn drilling is taken and assaycd for
copper. The SamplinE OF these drill
holes has involved the assaying Of
above $4,000 samples. on August I. 3ls
ff~Hf hrnn HrnrH a..
average depth OF 313 feet
Drilling u through.
At tho present time the company has
nine Churn drills at work. two capable
and ono to 1000 feet. The surface OF
the ground has been laid off by north
south and oast-Wcst lines into 100-fOOt
squares and holes have been put down
az the corners Of the squares. I'm some
cases 100 feet apart and In others 200
feet apart.
The property Of the Chino Conner
mining land. some 5000 acres covering
water rights mill site and dumping
Ground rs a result or geological
survey made last winter there are some
500 acres covering the formation in
which ore may occur At the present
tlme the drilling already performed has
prospected about 250 acres with the re-
suit Of proving up ore on n acres
II Is plain to be seen therefore that
the maximum limi.s Of extraction. The
ore already Indicated as n result OF
the $4,000 sample tests applied. shows
an average grade Of 2.63 per cent. or
80 pounds Of copper per ton. In the so
called Hearst section alone are 1900. 900
tons OF ore which Will average TO yield
2 per cent or 50 pounds Of copper per
ton. and were 20 deemed desirable to
limit operations for any length OF time
10 this high grade body Of ore. a re-
fnarkably low cost Of operation. per
pound OF copper. could be shown. We
understand. however. that 90 is Mr.
JacklinE's intention to seek an aver
nj NJ
the higher and lower grade ores may
be so apportioned as 20 yield n steady
freak cost exhibits viii be attempted.
To Use steam shovcI-.
The average thickness Of the ore so
TAR developed Is % feet and the ton
mage per acre IS stated by the en-
ginecrs at $4,000 tons Fui1v 40 Dcr
cent OF the ore. and the percentage NAV
be much larger. will be mined by steam
shovel. which means a very low cost
any other mining method viii be en-
ployed.
The averase thickness OF the waste or
overburden IS 20 feet. varying from
nothing up 90 zoo feet
Two steam shovels are daily expected
NJ the mine and on their arrival. the
/ be comm enCed so that By the time the
/ mill j. finished an ample supply Of ore
VIII be available. Such Of the ore as
| cannot be economically "shoveled" will
years later be mined by caving.
] During the past year extensive tests
OF the concentration OF the ore have
| been carried on. An old mill on the
| property was used and test runs on a
working scale were made on ores from
| different parts Of the property.
| The Chino ores. IN greater part are
similar 10 the other proDhyry ores in
l that the major portion Of the copper
/ exists as finely disseminated sulphide.
There g.. however. a considerable Dro-
/ portion u ore in which nearly all the
/ copper exists as metallic or native CON
u pa Tor FHn
/ All the ore. ReCOverios running from
I 50 Der cent TO IS per cent were attained
l IN The test runs made so that In a mod
ern mill az now being erected 20 per
/ cent recovery (26 pounds per tonl IS
confidently predicted.
] Another result OF these tests has been
I 90 determine Tho arrau-~rucnt Of the
D new mill and general designs for this
! arc now complete, Inc Eradins Is near
I " finished and tho steel and principal
/ heavy equipment is ordered.
VIII nj Water supply.
| The new mill is about 10 miles from
l tho mine. the site being selected owing
/ and 90 the Typographical ADVANTAGES
/ which Dr. offered. lt o. close to- the
I line Of the Atchisou. Topeka & Santa
| Fc railroad. over whose tracks the ore
! viii be hauled from the mine to the
/ mil. Tho mill fe designed in three
I units. each Of which viii handle ap-
| proAimatcly 1000 tons Of ore per day.
| giving an annual capacity OF 100000
] Nt Nulnh ores concentrating 1ai
/ INTO ]. may not show as low as copper
! cost as do those Of the Utah COpper
| company. but "a charge Of 81 a ton
/ would seem 60 be "a ma ximum ffeue
| when operations get well under way.
| and the annual output IS brought IN to
| sb.OOOnO0 pounds. This would mean a
| cost Of 81 cents a pound with a recov-
| cry OF 80 pounds ton. As operations
| are expanded the cost should decline
| from thai figure.
The company now has 100000 shares
/ putstandtnE- In the further dcvcIoD-
| uent OF the pro crty and in provfdfuE
| plant and working capital sufficient for
| an enterprise OF this magnitude "a NAV
/ DC necessary at some future date TO in
| oIeaSe tne capital TO an equivalent OF
/ 100000 shares. although at the present
| over 81 100000.
An scent cost and a 12-cent metal
market would indicate a Valuation -
/ sa4-l-o-oO0 Tor the Chino ore now in
I the Ground THE