Santa Fe daily New Mexican. [volume] (Santa Fe, N.M.) 1885-1897, 1890-07-26
is faulted to a limited extent,

VEIN anu dEplinll ~ bIlJ lUllDWlLS IiCu5
O evident;
l. When in the direction of the ma
incline the workings had penetrated t
assure vein as well as its adjoining mi
eralized coating in the dolomlte, then Il
incline was yet pushed forward, not in Il
ore stratum, but in the hanging wall ther
of, and 1t does now stand IN such hangii
wall, and in consequence | have reques
ed Capt.. Mclaughlin to sink blind she
near the lowest point OF the main inclin
the location of which | marked on Il
map submitted with this report as "pro
pect shalt" If continued for the distant
OF the fault, this shaft will uncover tt
continuation OF the bed led ore deposi
beyond the fault.
2. Such stopeing as mas been done
the region of the fissure vein and east {
it, has so far been done not on the COZ
tinuance of the bedded deposit, but in th
fissure vein and its mineral coating. AnC
it appears, that the fssure vein constitute
an ore body in itself.
| BY work done IN part during my pres
ence at the mine and IN part later o.
under my instruction and by my request
the fact is now established, not only tina
there is true assure vein in the mine
cutting and faulting the bedded deposit
but also that the fissure vein carries higl
grade and concentrateable ore, of which
have submitted samples, assaying as higl
as 13.5 per cent OF copper, and also OF TIT
fact that the bedded ore deposit continues
east beyond the fault.
The mine has thus opened a new re
source from which large amounts Of cop
per can be drawn, bearing evidence o
the naturalization going down eventually
at least for the distance OF the faulting o.
eventually to great depth, constituting
now the mine as one not only working OF
bedded ore deposit, but on minera
bearing hssure vein also, which, if moi
mineralized in its totality, is certainly
mineralized in lateral streaks between
faulted bedded ore deposits.
CAPACITY OF THE MINE FOR FUTRE COP.
PER PRODUCTION.
There is nothing the matter with the
Santa Fe Copper company's copper and
gold mine that would appear as justif-
cation for ceasing its energetic operation.
Much costly work has been done, the
uselessness OF which might have been
known before hand, and other work has
been omitted, the absolute necessity of
which would have been evident to COM
petent management at very early period
of the mines operation.
In this regard, it may be simply said
that all the work, in special in the mine.
has been done in following ore streaks
right from the surface, while all and any
attempt to uncover other or new ore bod
les, where they must reasonably be sup
posed to exist, has been omitted.
With all this, such as the mine is to-
day, ore can be broken sufficient to pro-
duce therefrom on an average OF two and
one-half tons of copper per day. But most
Of this ore will require mechanical con-
centration. While l therefore would adj
wise an energetic resuming of such an OPP
Grafton of the mine as will both produce
ore and prepare new stopeing ground,
would recommend to delay the starting of
the furnaces until provision be made for
plant, of limited capacity,
near the furnaces, so as to handle such
part of the present mine production as
will require concentration. Such smaller
plant can be erected within few weeks
and operations of the furnaces need not
De delayed until large concentration
mill be erected for also treating the &C.
low grade ores, being the re-
use from former operation or such ores
Is may be considered too low for treat
nent with the limited capacity OF plant
now Immediately required.
1t will even entirely depend on two CO.
operative and Contributlve causes whether
,wo and one-half or five tons or more OF
copper day be produced in this manner,
md at what figure this production be
made. These two contributive causes are
Is follows, and of almost equal importance,
namely:
/. That there be careful, experienced
ind in all matters Of mining, concentrat-
ng and smelling OF sulphide copper ores,
absolutely competent management, with
ull local authority in one hand only, with
/ we'll organized control, Undertaking. in
balance sheets and vouchers,
'uch management to be entirely free from
endencies other than the direct interest
II the concern.
2. The existence OF sufficient funds for
setting the mine into the shape, as re-
luired for permanency of production, for
he construction also of large concentra-
ion plant, and for a businesslike running
If the concern, so as not to be forced
o do work unproftably for the lack of
unds.
A more local study alone of facts and
books, so far inaccessible to me could
enable me to give precise figures, as to
capital required and cost Of production,
out have seen enough to justify me in
stating that even in counting nothing to-
ward the past cost of copper but what did
directly belong thereto, a saving of from
10 to rs per cent Of the former cost OF
copper could be made under a manage
nent requiring lesser number of officers
and taking better advantage of local cir
and giving satisfaction to
employees rather by equitable contracts
han by inadequate wages paid without
distinction as to skill and experience.
ORE CONCENTRATION.
During the limited period of operation
Of your company's main mine, large
dumps of rejected low grade ores have
Notwithstanding my long experience in
handling copper sulphides, L do not reach
in my estimate an average percentage in
the dumps as high as 5 per cent in copper,
as estimated by the company's officers,
but nevertheless estimate the total con-
tents Of dumps at not less than 1900 tons
of metallic copper, obtainabie therefrom
at cost not much in excess of the cost OF
copper produced from the mine; remand
ling, sorting and concentrating taking up
the equivalent in expense to the cost for
mining. All in all, the utilization of the
dumps will leave yet considerable mar
gin over and above the cost OF such utili-
cation, even at the low prices which have
ruled III the copper market.
But it is not exclusively in the amount
Il 1 \