, 1885-10-24
4 WONDER.
Electricity Again Utilized for Our
Benefit.
A Great Help to Miners and Pros
~pectOrs.


A party of gentlemen composed of
Messrs. NJ. II. Webber and Prof. Prince,
of Boston, Mass, Mr.. G. Il. Poland, of
Egbert. Wyo., Mr.. J. NJ. Tompkins, of
Cheyenne, and the writer, visited the
Silver Crown mining district, last Thurs
day, for the purpose of testing an electric
mine indicator, recently patented and man
ufactured in Boston by the Electric Mine
Indicator company, of which Mr.. Wcbber
is the president.
The patent mine Indicator consists
Of powerful batteries, highly sensi-
tive electroscoDes, electro magnets and
ground electrodes, scientifically con
nected and so delicately adjusted, that
the ~faintest current of electricity in the
ground causes a DETECTION of the needle
in the electroscope, and thus this wonder
tul invention, by means o1 attraction or
connection, brings this current to the sur
face OF the earth, renders il visible TO the
human eye and makes it useful to the
mining world by correctly indicating each
and every vein, giving Il perfect outline
of the same, even if fifty feet or more be-
low the surface; and by the variation in
its power enables us to Judge as to the
richness of ore as well as to the proba-
bic depth of tho deposit.
1t is well known fact that there is in
every mineral vein or deposit a current of
electricity increasingly traversing its entire
length and breadth, known as the earth
current, which, according to biologists,
was the first cause of these deposits, and
is now continually being generated by the
peculiar metallic combination in the ore
be the same gold. silver, copper. iron, etc.
That the existence of this current il not a
mere theory but an actual and positive
fact, has been demonstrated and proved
beyond doubt by this wonderful inven-
ton.
Its value to the mining world will be
apparent to all. Being able to trace out a
map of all existing veins, giving their cor
rect location, size and probable distance
from the surface, and thereby establishing
the value of the property, prospectors will
be able to work with as much certainty as
the builder does from the plans Of the
architect. Enormous outlays of labor and
money heretofore incurred in sinking
shafts and driving Of tunnels on imagin-
AIRY indications or merely blind outcIop-
pings, will be saved. There need be no
more unnecessary expenses in f~ruitless
search for veins by expensive cross-cuts.
The miner will know where to sink his
shaft, and thus not only will thousands of
dollars be saved, but mining, heretofore a
very doubtful speculation, will be changed
to a very profitable and legitimate bust
ness.
The experiments with this mine indica-
tor in the Silver Crown mining district
last Thursday, were witnessed by Messrs.
NJ. II. Weber and Prof. Prince Of Boston,
Mr.. Geo. i. Poland OF Egbert, Mr.. j.
NJ. Tompkins of this city, Messrs. Nc
Donald and Joyce. practical miners. of
Silver Crown, and the writer.
Wherever the indicator was applied
over Il vein it indicated the existence of
such vein distinctly by a rapid motion of
the needle in the galyanometer or electro
scope, and whenever the vein was passed
the needle would remain perfectly passive.
All spectators were convinced that this
wonderful little machine correctly located
mineral deposits, and tells their width,
length and probable depth from the sur
face.
The inventor and patcntee of this ma
chine has spent seven years in perfecting
it, and the company owning the patent
has expended $50. 900 for the same pur-
pose. The Indicator has been in success
full use in Georgia, Maine, Massachusetts,
California, Utah and Nova Scotia. The
use and sale ofthese machines in Colorado
and the territories of Wyoming. Montana,
Dakota and Idaho. is under the control of
Messrs. Weber, Poland and T~ompkins,
who will give all required information on
application.