The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1906-05-13

other properties on Bonanza Noun
tain and elsewhere in Bullfrog at the
same stage of development, puts the
Rush in a class by itself. Ten times
as good a showing has been made on
the Rush as was made at the same
period on any other property, includ-
ing the Denver, Eclipse, Tramp, HO-
DO and Gibraltar 1t is believed by
Consulting Engineer Bailey and by
the rank and file Of mining men on
the ground. who have personally
watched the progress of development
work on all the properties on BOnan-
"a Mountain that the short period of
development warrants belief that the
Bullfrog Rush Mining company owns
the greatest property on Bonanza
Mountain.
They base this conclusion on facts.
as follows:
More of the Denver vein has been
opened upon the Index claim of the
BullfrOg Rush Mining Company
than has been disclosed on the prop
erty of the Bullfrog Denver Mines
Company itself. The average as
say values in the tunnels near the
surface on the Denver vein in Bull
frog Rush Mining Company ground
are even higher than they were on
the Denver vein in Bullfrog Denver
Mines Company ground. The char
acter of the ore in this vein in both
properties is similar. There is no
reason known to mining science why
the same high values as chara cterize
the Denver vein at depth on the
BullfrOg Denver Mines company
ground should not be found on Bull
frog Rush Mining Company ground,
and they take it as an accepted fact
that at least as good values will be
found at depth on the Denver vein
in Bullfrog Rush Mining Company
ground as are now being found at
depth on the same vein in Denver
ground
Again. the great Rush vein. IT
self traversing BulIfTOg Rush Min
ing Company ground for a distance
of 1,500 feet and having the gigantic
width of from 154 to 800 feet, and
showing values near the surface. for
width of over Is feet of $33 per
ton. which is far in excess OF any
results obtained On the Denver vein
from 50 l>rge an ore body near the
surface, conveys to them the idea
that at depth the Rush VEN will be
found to be as large, if not a larger
mining proposition than the Denver
vein. They point out that the aver
age assay obtained on the Denver
vein on Bullfrog Denver Mines Com
pany ground near the surface was
less than So per ton and that on
the Rush vein at the same depth
average values of from $40 to $35 per
ton are being obtained.
Manner of Mining Ore Reserves,
Etc.
It has already been noted that all
of the work done on Bullfrog Rush
Mining Company ground has been
prosecuted with a view to defining
the veins and determining the con-
tinuity of the ore bodies and no at
tempt has been made to block out
ore. At the same time the work has
been accomplished in such a miner
! Ike way that when the time ar
rives for the blocking out of the ore
| bodies with a view to transporting
the ore to mills in the immediate
/ vicinity, all of the work viii have
/ been found to be of utility and none
| of it waste.
! It is now estimated by Prof.
/ Bailey, the consulting engineer in
| charge, that sufficient ore has al
! ready been opened up in the ordinary
! course of exploration work TO
keep a 2O-stamp mill busy year.
/ and that half a years blocking out
/ work will disclose sufficient ore to
! keep 10O-stamp mill busy for five
! years.
The average value Of the ore opened
up on the Rush property so far is SIS
per ton. a mountain of it is revealed.
If the veins have ordinary depth, and
there is no reason to believe they have
| not, then there are hundreds of thou
| sands of tons of ore that it will pay
| to mill in BullfrOg Rush Mining Com
pany ground, and the output cannot
be computed.
It has been pointed out that all
of the veins on Bonanza Mountain
have improved in values as depth
has been obtained, and that ir the
general experience proves true OF
the Rush an enormous tonnage OF
high grade milling ore will be opened
up on the Rush property at depth
as soon as the sinking of shafts and
WINES has been accomplished.
| The conservative men at the head Of
the company, however, prefer to base
| their hopes and calculations on the
lowest possible average values Of
the ore bodies as revealed on the sur
face, and, momentariIy discarding the
practical guarantee of the engineer:
that the ore at depth will be found
! to be incomparably richer than on the
| surface, they are combining their cal
Culations to profits that can be real
lied on ore that averages SIS per tor
only.
Mining and Milling of Rush Ores.
Prof. Gilbert E. Bailey. one of the
pioneers of the Black Hills, forme
Professor of Metallurgy in the Stat
School of Mines of South Dakota
the State In which is located the grea
| Homestake mine-later Superintend
ent of the Harvey Peak Mining com
pany in the Black Hills, that WOrket
$50 tons per day in it's mills. and 9th
er experts on the ground. with whom
the officers of the BullfrOg Rus
Mining company have consulted, al
of whom are conversant with the his
tory of the HOmestake, have supple
: facts and figures from which a com
: par1Son may be made of the Home