The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1906-10-22
DIG AND DELVE
IN BIC MOUNTAIN
Campaign of Development on
the Napoleon Maghera
Moves With Energy.
FORCE OF FIFTEEN
MINERS WORK PROPERTY
Long Tunnel of 1000 Feet Has
Been Bored Into the
Hill.
Special 10 The Trihnnc.

Special to The Tribune
OGDEN, Oct 21,-The campaign OF
development on the Napoleon and Mag
hera on the big mountain north OF Og-
den is progressing with energy and
sufficient forces, under the manage
ment of Mr.. Don Mcguire, who is also
president \ force of fifteen miners
is al work, in addition TO the force
on the pack trains. the cooks and other
subordinate help. and the supplies of
coal, hay, provisions and mining tools
and explosives, are being rushed in
for the winter.
The magnitude Of tho work on this
great copper mine is difficult TO de-
scribe because of the physical OBJ
structions that have imposed them
selves. The operations of the company
are at an altitude of about 1900 feet
above sea level, in q mountain that
stands 10000 feet in the air. Every
thing is taken in over the rocky Jrail
in the creek bed, and up and down
nearly vertical cliffs, on burros. The
men working there acquire the same
facility for rock climbing and are APP
parently as much at home as ordinary
mortals arc on level ground, and are
as surefooted as the burros.
What System Is.
The vein system of the Napoleon and
hGPuOTI COISlStS ol tnp pdIdllEl 'tibo,
5000 feet in length and running into
the quartzite that forms the middle
measure of the great mountain, and IS
1900 feet thick These parallel veins
are about 600 feet apart, the greater
of the two lying to the north OF the
Napoleon and Maghera vein, the latter
sixteen feet in width and the north
vein twenty feet. Both of these con-
verge as they approach the contact
ohO,f feet wide
and at depth will undoubtedly continue
through the gneiss and dioritic forma-
tion under the quartZite which ovcrlies
the gneiss, the base of the mountain.
Long Tunnel and Shaft.
The work that has been accomplished
on this property amounts TO about 1000
feet of tunnel and shaft. In the upper
workings, on the Emma Nevada lode,
there is a tunnel 800 feet and shaft
sunk in the ore. This vein has we'll
defined cross-vein, running through it
that is thought to be an important
feeder. The next tunnel coming down
the precipitous mountain is what is
called No. l, and is driven on the Ma
poleon and Maghera vein a distance of
700 feet. 1t is on the strike of the
vein and is in sixteen feet of high-grade
copper ore all the distance after the
first thirty feet III the tunnel. From
this 4 cross-cut is being run TO the
north vein, and at $50 feet in winze
is down so feet, where the entire bot
tom is in ore. This Wine will be sunk
TO 100 feet depth, and drifting on the
vein both ways will be followed. This
tunnel is equipped with blacksmith
shop and tunnel house. and q gasoline
engine furnishes ventilation to the
mine, which is warmer than the out
side atmosphere at this season.
than the n g. NJ. tunnel n lower adit
to crosscut this great vein 400 feet dis
tant, is in over 200 feet. The ledge
crops out strong and its location is dc.
fined on the surface. This adit will be,
for the present. the outlet of tho mine,
and In drifting on the vein 1t will give
Il vertical depth of 900 feet before it
reaches the quartZite.
ALI Work Is In Ore.
In the upper and second tunnels all
Of the work is in ore, and so good is
the quality, the chalcos, the copper
silicates, the bornite and occasionally
the cuprite, being ever present, that
the entire mass averages u per cent
copper. The gold contents are about
SO, and there is varying values in sill
yer. Before ore can be extracted an
aerial tram will have to be constructed
and a concentrator is to be built at the
foot of the mountain When this is
realized and the lower tunnel opened.
the output Will only be limited by the
capacity of the tram and the mill
The company owns thirteen contlng
nous claims, covering all of its vein
system. il is Incorporated and some
of the largest blocks Of stock are he'd
in Iowa and Illinois. though OGDEN
people, including Mr. Mcguire hold the
long end. The various openings are
equipped with good, substantial build
ings the main building being situated
on the cliffs between the lower tunnel
and tunnel No |. II is fifty by twenty
feet and has two commodious anncxcs
for sleeping apartments for the men.
and a hrst-class boarding house.
The work Is difficult because Of ihc
preclpitous mountain, and the fact thai
all the lumber, the engines, the suD-
plies, and everything that is required
in the operations has TO be carried M
on burros and the physical conditions.
In most instances, are more difficult TO
overcome than the conditions that pre-
vail in the Andes. The work under
ground is comparatively easy, and i'm
matter of eighteen months the Napo.
leon and Maghera is destined to be one
Of the important copper producers of
Utah.
The opening Of the district and tbc
development Of its immense veins is
entirely due TO the indomitable couraqr
and the intelligent effort Of Mr. Don
Mcguire, himself one Of the best geolo-
gIsts and mineralogists in the Western
Statos.