The Salt Lake herald-Republican. [volume] (Salt Lake City, Utah) 1909-1918, 1910-05-01
SEVEN TROUGHS IS
IN BETTER FORM
Operators Are Getting Line
Upon Ore Occurrences
of Camp.
COALITION ON SAFE SIDE
SHOWS NICE NET EARNING
SINCE WORK RESUMED.
COALITION ON SAFE SIDE
BY F. W. sPRAGUE.

nl2n-GrdQe ore Inc ROTh QOAlt III
complishnig that was almost entirely
in the nature of blocking out the ore
bodies from the 400-fOot level. In ad-
dition TO the blocking out of ore, work
was prosecuted in drift and a cross
cut which are exploring virgin ground
of great promise. The company has ere
in sight, according to the report OF a
reputable mining engineer, TO assure
production at the present rate for at
least six months, with many times that
amount of probable ore.
The Seven Troughs Coalition COM
pany may be said to be well ''out of the
woods" Earnings to the extent of pay
ing back all that has been invested for
properties and development, together
with a reasonable profit, is virtually
assured; and it has an excellent pros
pect for making one of the big gold
mines Of the country.
What has been accomplished by that
company affords a reasonable basis of
expectation for those who would make
mines in ground of similar character in
the Seven TrOughs district. 1t is per-
haps the largest gold-silver mineral
lied district in Nevada; it is ten and
twelve miles long by three and four
miles wide. Its formation, the feature
of which is a system of rhyOlite and
basalt bikes OF remarkable regularity,
is one of excellent promise for extern
sive bodies of pay ore
Is Not Poor Mans Camp.
But Seven Troughs is not the poor
mans camp" which its earliest surface
showings promised. While the bikes
are regular the intervening ground is
TO great extent broken. The zone Of dis
turbance has not even yet been entirely
passed through, but in the deeper work
ings is steady Improvement greater
continuity of ore bodies as well as in
more regular distribution of values
which tells of results at depth which
viii fulfill every promise of the unusual
surface indications
In development work in the Coalition
estate to date, including work done by
leasers, has been expended the total
sum of approximately $685. ,000-and the
mine has only the last month been
placed upon a paying basis. That rec
ord could have been beaten. of course,
had there been knowledge Of conditions
which could be afforded only by ex-
tensive prospecting. But il serves to
show that one must count upon eXpend-
ing considerable money in development
in Seven TrOughs as well as in any
other mining district that has ever
been Observation-Disclosures one can hope TO
have a regularly producing mine
Early operations in Seven Troughs
were attended by the opening near the
surface of many ore shoots of remark
able richness which gave every promise
of being large and permanent. But,
while the veins continued strong the
values were not constant and in the
absence of knowledge of where or when
another rich shoot might be expected
to be encountered, the small operator
quickly became discouraged. A few eX-
periences of that kind frightened the
investor, and the impression soon be-
came general that the camp was one
of unreliable surface deposits-this de-
spite the opinion of every expert of
prominence that has ever examined the
mines, that the ore that has been found
has come from great depth.
Undertakes Systematic Work.
The Seven Troughs Coalition Mining
company represents a consolidation of
the kindergarten and Therien Mining
companies, to whose estates some minor
groups were added, making in all nearly
800 acres of mineral ground. The Kin
dergarten company had sunk an in
clined shaft about 800 feet on what is
called an east and west vein in its
ground, and the Wihuja. Leasing COM
I pany had gone down about the same
distance on the westerly extension of
the same vein. Both had done some
drifting and had opened cOnsidera BILE
rich ore, but not enough to make pro-
ductiOn profitable.
/ The Coalition company at once in
! augurated a campaign of systematic de-
veloument- A vertical shaft was sunk
/ to the depth of 300 feet, the vein was
/ opened on the 400 and later on the 500
. 1nN-nl Of 4
/ connection was made with the new
working shaft. The Wihuja inclined
shaft is yet used as a working shaft.
/ however. in addition to the Kindergar-
/ ten vertical shaft. A steam hoist is
/ operated on the WihuJa workings. the
/ steam being generated by an Oil-burn-
/ ing engine. which is giving excellent
| satisfaction. The Kindergarten shaft
is equipped with a gasoline engine,
which likewise does good work
| The principal development work has
been done on the 400-foot level, on the
| incline On that level the vein. which
/ pitches at an angle of about Sc degrees
/ has been opened nearly 500 feet on its
strike, the Wihuja and kindergarten
workings having been connected. At
/ frequent intervals on that level raises
have been driven in ore, from twenty
! to fifty feet, generally. and the raises
have been mostly connected, thus block
/ ing out the ore and making the most
perfectly ventilated mine that the writer
( ever entered.
Ore shoots Continuous.
! On the 400 level are four ore shoots.
so-called. although with the exception
| of one space of about fifty feet of bar
rem ground. values are continuous for
/ 600 feet. Edward Ryan, state mine in
! spector of Nevada, who examined the
! Coalition property about two weeks ago,
/ said it was one of the most remarkable
ore shoots he had ever seen, and he
referred to it in the singular number.
! He said that he was most agreeabiy
surprised at the mine showing, and ex-
pressed the opinion that the general
! impression of The Seven Troughs dis
! trict needed revising in favor of the
! camp.
The ore shoot varies greatly in size.
In places the pay streak narroWs down
to a few inches. and again it widens to
! two and three feet and even more. The
values likewise vary, but the average is
| high. The mill heads average close to