The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1906-10-23
DIG AND DELVE
IN BIC MOUNTAIN
Campaign Of Development on
the Napoleon Maghera
Moves With Energy.
FORCE or FIFTEEN
MINERS WORK PROPERTY
Long Tunnel of 1000 Feet Has
Been Bored Into the
Hill.
Special to The Tyibure.

OGDEN, Oct 22.-The campaign Of
development on the Napoleon and Mag
bera 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 at 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 the work on this
! great copper mine is difficult to de.
scribe because Of the physical oh
| structlons that have imposed them
selves The operations Of fine company
sre at an altitude of about 300 feet
| above sea level. in mountain that
| stands 10000 feet in the air Every
| thing is taken in over the rocky trail
! in tho 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 are on level ground, and are
as surc.footed' AS tho burros.
What System Is.
The vein system of the Napoleon and
| Maghera consists of two parallel veins.
| 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 Maehera vein. the latter
sixteen feet in width and tha north
vein twenty feet. Both Of these con
verge as they approach the contact
! and form q vein about 90 feet wide
and ~ depth will undoubtedly continue
| through the gneiss aud dioritic forma-
tion under the quart7ite which overlies
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 q tunnel 900 feet and a shaft
sunk in the ore This vein has n we'll
defined cross.vein, running through 1t
that is thought to he an important
feeder. The next tunnel coming down
the precipitous mountain is what rs
called No, / and is driven on the Ma
poleon and Maghcra vein n distance Of
700 feet. II 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 in the tunnel. From
| this a cross.cut is being run TO tho
north vein and at 450 feet in winze
is down so feet, where the entire bot
tom is i'm ore This winze will be sunk
to 100 feet depth. and drifting on the
vein both ways will be followed. This
tunnel is equipped with q blacksmith
shop and tunnel house. and a gasoline
engine furnishes ventilation TO the
mine, which is warmer than the out
side atmosphere al this season.
Six hundred feet vertically lower
than the y. q NJ. tunnel 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 de
fined on the surface. This adit VIII be-
for the present the outlet of the mine,
and in drifting on tho vein it will give
n vertical depth of 900 feet before 1t
reaches the ouartzite.
All 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
slllcatcs, the bornitc and occasionally
the cuprite, being ever present, that
the entire mass averages II per cent
copper. The gold contents are about
| Sc, and there is varying values in sill
| yer Before ore can be extracted an
aerial tram will have TO be constructed
and concentrator is TO be built ut the
| foot of the mountain, When this is
| )eallZeu ana inc lower lunncl opened,
| the output Will only be limited by tho
capacity of the tram and the mill.
/ The company owns thirteen contlng
uous claims, covering all of its vein
system Ii is incorporated and some
of the largest blocks Of stock are held
| in Iowa and Illinois. though Ogden
people, including Mr.. Mcguire. hold the
long end The various openings arc
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 anneXes
for sleeping apartments for the men,
and firstcass boarding-house.
The work is difficult because of the
| prccipltous mountain. and the fact that
! all the lumber, the engines, the sup
! plies: and everything that is required
! i'm the operations has TO be carried mp
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 in
| matter of eighteen months the Napo-
| leon and Maghcra is destined TO bc one
| of the important copper producers of
| Utah
The opening of The district and the
! development of lis immense veins is
| entirely due to the indomltabe courage
! and the Intelligent effort of Mr. Don
Mcguire, himself one of the best geolo-
glsts and miDeralogists in the Western
| States.