The Goldfield news. [volume] (Goldfield, Nev.) 1904-1911, 1908-04-11

workings OF the Round Mountain Min
ing c~ompany's property.
The ledge is truly a marvel in sew.
eral respects. 1t lies in a true contact
of porphyry and altered granite, dip
ping into the hill at about 80 degrees
for the first two hundred feet and then
running somewhat fatter. At the crop
ping it is only a few inches in width
and does not measurably increase I'M
til the 70-foot level is reached. There
it makes considerable ore on the west
drift, but nothing was found on the
east side at this point until a few days
ago, when the ledge suddenly jumped
to dimensions, the entire face of the
working now being in rock of excellent
grade. Mr.. Davis believes this to be
one of the most important finds yet
made in the property, as it demonstrates
possibilities to the eastward from the
shaft on the lower levels.
NO WASTE EXTRACTED.
From the 10O-foot point downward
practically not a pound of waste has
been extracted from any of the work
ings, with the exception of the con-
tinuation of the working shaft, which
is being sunk in the footwall just under
the ledge. Superintendent Macdonald,
one of the most capable mining men in
the business, is an enthusiast over the
property, and he said to the writer:
when / leave the ore I'll leave the
hill.' There is little chance that he
will do either for many, many years.
The ledge is steadily increasing in
width as depth is attained, and on the
400 level il is at least "a feet between
the walls, every pound of which is being
put through the mill. While this gain
in width is steady and rapid, the walls
of the vein have a wave-like formation
and at times they approach to within
six feet of each other, but there are no
signs of fault or fracture in the deeper
workings, all indications pointing to
continuity of both extent and richness.
Everything between walls pans, the
values ranging from SIS to $50 with
pockets of picture rock on all the levels.
The ore is most peculiar in it's compost
ton, consisting as it does of fine ground
particles of quartz, cemented together
with iron and tale. In places there are
bodies of mineral ash and here is where
the heaviest gold is obtainable. Other
evidence of the intense heat which pre-
vailed at the time of the enrichment is
found in Stag that looks as though it
came from a furnace.
In addition to the 100000 tons Of ore,
averaging better than SIS, now exposed
in the mine, the surface of the property
is covered with placer, estimated to
be worth from 100000 to half a mil
lion dollars.
RECORD FOR EXTRACTION
Probably the closest extraction on
record by the simple amalgamation pro-
cess is made in the r. M. M. Co. s mill.
1t saves from 90 to "a per cent of the
values. Originally the tailings were
.impounded, but they were soon found
to be too valueless for cyaniding and
now they are turned adrift. The mill
consists of two Nissen stamps and W
six-foot Huntington. The average
daily duty of the plant is so tons, or
barely sufficient to keep ahead of the
80 or 40 miners, who are doing little
stopping, but who are extracting a re-
markably large tonnage per man in de-
work. For, while the ground
holds up so well that only an occasional
stull is required, it breaks very easily.
There is half a days picking and muck
ing after each round of holes is fired.
Within a month the capacity of the
mill will be increased to 100 tons daily
and the cost of treatment will be still
reduced. Mining and milling
now cost about $3.50 a ton.
1t is a notable fact that since the mill
running, less than a year ago,
t has paid all the mining expenses, pro-
vided a large fund with which the com
pany has purchased additional acreage
and has placed a fat sum in the treas
1ry, which from now on will be rapidly
enabling the beginning of
the payment of steady dividends by
next fall.
I~ndisputable evidence of the richness
this mine might be seen this week
the John s. Cook bank in the form
six gold bricks. which were brought
back in the e-Hartford on our re-
urn trip, with an armed guard in an.
,ther automobile. The bricks weighed
l65 5-12 Troy pounds. The grade was
much better than the previous c~leanups,
out even at the old figure of 1880, they
we're worth $26,7 u. so. This cleanup
was the result Of only IL days run and
vas on the average ores of the mine.
BOUND MOUNTAIN EXTENSION.
Seven claims in extent, the estate
the Round Mountain Extension MIN
the oldest location in the
district, covers the crest OF hound