The Pioche record. [volume] (Pioche, Nev.) 1908-1925, 1921-09-30

blocked out, partially developed, or {
in the mine workings, il |
IS necessary to first determine what |
is ore and what Is not. II
is certain that there lis very large
tonnage Of mangaHiferous iron ore;
some of it is too high in silica TO be
acceptable TO the smelters, some of
it is high in lime and as the lime be-
tween the ore and non-commercial
material of very similar character /
must be determined by chemical
analysis, it would be extremely diff
ficult if the ore material were /
bunchy. Fortunately each bed has
its individual characteristics and
composition, though the composition
does vary somewhat from place to
place.
Inasmuch as l feel satisfied from
my investigation of the situation that
the company will sooner or later be
able to dispose of the bulk of its ore
on far more favorable terms than
in the past, shall assume that only
re carrying an excess of 20 per cent
basic material over soluble will be
shipped and that the excess will in
clude lime as we'll as iron and man.
ganese.
Though there is considerable ore
carrying much higher excess, as
sumo that it will be used to mix with
more silicious material in order to
make an acceptable average. l shall
assume that the mine can maintain
an output of 20 tons day or more,
of ore that will average:
Silver, "a ounces per ton; lead
80 per cent; insoluble, 26 per cent;
zinc, per cent; iron. 81 per cent;
manganese, 8 per cent; lime, 4 per
cent.
| believe it possible to maintain
mined. If desired, the grade can be
raised by leaving the silicious
Brown" ore in the mine.
On the first level, there is only {
small tonnage left in the Davidson
orebody. The southwest drift Cos
and 109) is run on the shale hang
ing wall of the Big Bed which dip
easterly at 81 degrees to so degree
and there is ore along the level
but practically no Stopping ore above
This level was not sampled as tn
: Big Bed orebody is presumably onl
mineable for 60 feet above the 20
foot level.
On the 200 foot level, the Davi(
son orebody has been very nearl
mined out and the reserve is M
: estimated for this level alone. tt
: south draft on an extension of Il
Davidson orebody was sampled Il
lit feet, averaging 0.86 ounces 81
yer per ton, 1.6 per cent lead, g.:
= per cent insoluble, 1919 per ce
! iron, 9.5 per cent manganese,
. per cent lime and ST. per cent yin
or an excess of 31.9 per cent.
Costs
N During 1920, when the mine W
onorotad ,l,,,Oo< ~ oopoo;tv tho VI
IT GINA Louise produced $3.50 to
ps at cost of $1O1,175.60, or So.
RI per ton, including all developme
work and the expense Of new Q
va bins, bunk house, ETC., which ma
the cost per ton higher than in 191
ar 19 when it was EOS IL per ton
production of 27,O24 tons and
~, $1.75 1-2 per ton for the 22,0
tons shipped in 1919.
OIL In 1919, the company's incol
from ore sales was $75,696 and
OIL penses $677,693, leaving profit b
ance Of $8,0O3.64. but this was
OIL hausted by the expenditures of 81
306 for surface improvements, n
,se chinery and new property, all pr,
rth erly chargeable to the capital
ice count. besides an additional $50
vel for exhaustion of ore reserves,
probation. etc.
In March 1920. when labor a
am supplies at their very highest pc
hat the mine employed AZ men and p
IN duced 3.459 tons OF ore. Costs
ore ton Of ore actually shipped W
s$1,605 and new development wo
S0.S35 per ton or total Of S2.43s
md per ton. Development work c
de $3.50 per foot compared with 50
n for the second quarter of 1920.
the breaking cost $1.S4 for the sec,