New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1859-10-25


Of dust
J. G. Ros, T. Co., formerly Of Chiesgo, Ill have
worked their clsjm ever since the first Of June.
They work onlwbst is known &c the Fith lead they
employ three men, operate ole tlQice and obia n
value Of about 500 per day.
Cotton S Co.. late Of Michigan, commenced
work on the 2-tb Of May last. Generally employed
four men and averaged nearly $3.50 worth Of du,t
per DAY.
Gy,dky & HendersOp, late Of Cass Co., Ia,
1.-THE same firm whose affidavit a. 10 the enormous
yields Of this claim during Mr. Greeleys stay was
embodied ia my lDt letter The claim OF this
firm has yielded rather irregahriy. The largest
yield ,iDce their pay dirt commenced giving OUT
was that II the Eth day Of August, on winch day
they washed out SOC dwt. The books OF Messrs
G. d II. show that they have paid j. II. Gregory,
(the discoverer Of these dgg ngs) OF whom they
bought their claim for 81 900, ont Of its yield not
less than $l4,JO in weekly installments.
In the above the yields Of the principal quartz
claims, in which the creyces or pockets still ap-
pear are enumerated. Their present yields do not
compare avorably with tbose Of other claims dur
ing the month Of June But it would, neverthe-
less be fallaci0us and premature 10 conclude from
this dimiDution Of the gold crop OF the gregory
Valley that the larger portion of its treasures have
been exbumed. The truly golden age Of the Greg
DRY mines il, On the contrary, just daTDlDg. For
the fact that Tie soiid rock cf tie innumerabD quarts
kods that stretch across the Gregory patty IS gold
Jsa,ing beyond all Example, Is established beyond all
gains0y. In the following some evidence IL ad-
duce6:
On the Goth Of May last / picked mp at random
several pieces Of excavated solid quartz 90 the
claim then worked by Bstes d. Co. j carried the
rock to Denver City and handed it 10 DR.. Fox, the
agent Of the Express Company in the former To-
caty with the request to have II forwarded TO the
principal Office in Leavenworth City and thence 10
Il -. ood rtchn "a ha
tested in the United States Assay Office. In the
eaJly part Of August the Express Company re-
ceiyed the following note from Prof John Torrey:
"UsA Assay OFFICE, n Y, July q 1879.
"GEsTsi The ensn Of quartz m here By ,oa some ssy.
ouet.on. Respectfully, JOHN foRREY, A.a5.L"
From the above it appears that the aggregate
value Of the precious metals contained IN one tua
OF Gregory quartz is nearly t1o hundred dollars.
Nor lie this all. Mr.. ConbliD, late Of Chlcsgo,
and member Of the firm Of Conklin e. Co., who
are ut present about completing the erection OF the
first regular quartz mill in the Gregory Valley. has
taken special pains to ascertain the relative guam
titles Of gold contained in the Gregory quartz by
a series Of experiments aud uniformly found 1t 10
be richer than any be hsd seen n California. Your
spondent himself has tested quartz from eleven
different leads and found it TO contain gold at the
rate of from one 10 three hundr,d dollars per tun.
meDt Of this writing eight quartz grinding and crush
ing machines in operation in the lower part ofthe
Gregory Valley. Rudeley constructed, and Imper-
feet, and unsatisfactory they in their opera
ton, they yet yield handsome revenue to their
several proprietors. Six of them are worked with
water and two with OK power The results OF the
fomer have been more satisfactory than the latter.
The mschnes driven with water, grind or crush sixty
bushels per day on IN average at clear proht of
81 per butbel while those whose motive power IS
represented by patient quadrupeds, grind or :rush
only about three pits one tuo OF quartz per Day,
at a net profit of about S25.
DR.. c. S. Burdsal of Chicago, and Mr.. c. Il.
Gra,Ot a we'll known citizen of Wisconsin have
been epgsged for the last four months in subectlng
the quartz from the different leads to thorough
tests They have examined rock taken from as
MANY as forty leads, and found 1t TO be goLdbearing
at the rate Of from % cents to 81 % per pound.
Their Investigations mad scientific basis, and the
above results can be relied Oh as being perfectly
accurate.
1t was but short time ago that the solo rock of
the Gregory leads was at all made to yield. Up to
the fret of August an utter restitution OF all lmpe
mepts for getting the quartz out, and of all ma
cbinery for working it after being gotten out pre-
vailed in the Gregory Valley. Nor are the I'M
wieldy ponderOus and defective crushers aud
grinders, DOW being operated, up to the wants of
the mining community. The richness OF this
mining 6istIic. Will, however, commence beng de-
veloped with the introduction of regular quartz
mill only. One-thst of Messrs. Conklin d Co.,
already mentioned further above--will be IN far
running order ID few days. 1t is worked with
ttesm ard it's crushing capacity can be extended
to fifty tuns per day. The first week will, of
course be devoted TO experimenting with the varl-
Gus kinds of quartz. But something definite with
regard TO the yield Of the solid quartz of the Greg
ory mines, when worked on large scale will yet
~ II. Eli Il DhnV.. trim
have their mill well housed, and are confident OF
being able 10 operate il until late in November,
In addition to the mill of Messrs. Conklin
& Co. two more, that are now within few days
travel from the mountains will yet be put up this
Fsll. One 10 owned by Messrs. Lefsrre a. Co.. OF
Wisconsin, and the other by Graham q Co., OF
Lesyenwortb City, X. L. i further know OF sev-
enttsn more mills that have been ordered BY differ
ent mining associations, with view 10 being
operated next Spring and am persuaded that by
the first Of August next at least fifty will cause the
mountains TO reverberate with the shril tone Of the
steam whistles and the unceasing chatter OF stamp
ers Then the true extent of the mineral riches OF
the Gregory Valley will become known. Then
golden harvest Of wonderful magnitude will be
gathered. and Nevada and Mariposa find COM
petitor for worldwide renown, that promises fair
to cutshipe them ere our globe shall have once
more described IFS yearly orbit around the sum-
While engaged upon the partially fruitless search
after the disappeared crevices or pockets the own
ers of the different leads and claims traced out
enormous quantities of solid gold.besriDg quartz.
/ believe that fully three thousand tuns OF such,
representing values amounting 70 hundreds OF thou
sands of dollars are now piled up within the nat
ural limits Of the Gregory Valley; and this hgure
is likely to experience a tenfod increase IN few
weeks after the mmencenent Of the operations
Of the quart z.mills. The confidence indeed, in the
richness Of the Gregory quartz is 30 firmly essab-