Elk City mining news. (Elk City, Idaho) 1903-1913, 1904-04-02
THE JUMBO MINE.


This property is situated IN the can
yon of Deer creek four miles southeast
of Hump postoffice and over thousand
feet lower The vein strikes square in
to bluffy granite slope Of nearly half
pitch The quartz exposures at the
surface are nowhere over fifty feet long
and about ten feet thick, rather hard
and lean looking.
There are three adit tunnels drivep
on the vein which are one Hundred ana
ninety, five hundred and fifty, and
eight hundred and fifty feet in length
respectively. The, vein stands nearly
straight on end and the face of the
eight hundred and fifty foot tunnel,
known as No. 8; is five hundred and
twenty feet vertically under the top of
the first ore shoot in tunnel No. l. All
this work is connected underground and
exposes two great ore shoots of definite
clean gold ore. One of these shoots is
two hundred and fifty feet and the 9th
er three hundred feet in length by five
feet to seventeen feet wide, which from
constant mill tests made as the develop
ment progressed has shown an average
value for everything put through,
which included the full width of the
vein where it was seventeen feet be-
tween walls, of over ten dollars per ton
in gold.
There is now blocked out in this mine
measurable ore reserves amounting to
fully one hundred and fifty thousand
tons, and the new No. tunnel now be-
ing pushed in from the level of the
mill bin will, it seems reasonable to ex-
pect, more than double the present ore
reserves, and lift the Jumbo away up
in the list of gold quartz bonanzas.
The development of the Jumbo, its
design and arrangement, including all
the surface equipment, presents one of
finest examples of modern mining prac-
tice to be found anywhere in the west,
and hewed as it was out of one of the
most rugged phases of Idaho's rugged
topography, stands monument to the
remarkable energy of its able manager,
Mr.. Frank Brown, local mining man.
Mr.. Brown dates his first mining ex-
perience from Gilpin county, Colorado.
He was running little store business
at Florence when the Hump excitement
broke out; he sold his business and
bought half interest in the Jumbo
claim and started in with nothing but
his bare hands, In 1898, with his asso-
'ciates, he bonded the property and hac
it turned down several times by expert
talent. He finally induced some busi
ness men of Grangeville and Lewiston
to put up enough money to build a two
stamp mill on the ground. The frs
months run with this little plant pro
duced gold brick weighing two thou
sand dollars and demonstrated that th'
values in the big fssures of the HUM
could be saved and made to yield yer.
handsome profit to simple mechanica
separation.
After this substantial demonstration
of his locally considered boom stories O
the Hump, Mr.. Brown received the en-
thusiastic support of local investors
with the result that he has develope'
them gold mine that amounts to bo
nanza and whose lasting qualities ar
among its most evident features.
The mining fields Of Idaho could us
an army of such boomers as Mr.. Brown
men who are willing to back their Judg
ment with their time and muscle, an
there are several more such men in tn
the Hump at the present time following
in the footprints of this successfr
pioneer, and the various mineral show
ings they are making are likely to al
ford some very entertaining mining lit
erature in the near future.
Mr.. Brown has recently been appoint
ed general manager of the Crackerjac
mine. which will mean the same broa
plan of development for this mine tha
has been accorded the Jumbo and tn
shortest advisable cuts to the dividen
class.
The Crackerjack mine, located tw
miles northeast of the Big Buffalo an
Hump town, and four miles north
the Jumbo, is looked upon as havin
even bigger future as an ore resourc
of fully as good if not better range
value in gold as the Jumbo, and its Il
cation high up on the very steep slope