Tonopah daily bonanza. [volume] (Tonopah, Nev.) 1906-1929, 1911-10-19
VERY FAVORABLE
OPINION OF A
Mining MAN

Ioame to McGill last July from
Johannesburg, Transvaal, South
Africa, to study the methods en-
ployed at the concentrator here in
The reduction of ores, left Monday
morning for Hayden, Arizona, to
accept a position in the mines of
the Ray Consolidated Copper COM
pany at that place, says the Ely Ex-
positor.
While in Ely Mr. Gerhardi made
many friends who will regret to
learn of his departure He is not
going to Hayden a total stranger
as Mr.. Erie " Daveler, formerly OF
Tonopah, who was employed here
recently installing the Janney class
ifiers in the concentration, is en-
ployed at Hayden in a similar ca
pacity, and he and Mr. Gerhardi
were fast friends during his stay in
McGill.
Mr.. Gerhardi formed very fav-
orable impression of the methods of
reduction employed and compi-
mented the American mining men
highly upon their skill as mining
engineers by saying that the Ameri-
cans have proven the best miners
on the gold bearing reef which is
mined in the Rand district in South
fpi1a w bn x4-a oFlt
ployed and that since the English
have taken over the active man
agement of the different properties
of that section the result has been
that the cost of operation has risen
considerably The gold ore of the
Rand is found in q reef which out
crops in some places on the sur
face and has been opened for about
60 miles on its easterly and west
erly strike, dipping to the south
This reef is of sedimentary origin
ana is practically quartzte con-
glomerate. The best ore was found
near the footwall of the reef
In this district are the four deep
est shafts in the world namely, the
Cinderella Deep, Jupiter Deep, Turf
and South Rand shaft These vary
in depth, all being over $500 feet
deep, When the shafts strike the
reef at these great depths the reef
is developed by an incline sent
down on the dip, and these in
clines have attained depths in the
four shafts varying from 6000 to
1000 feet. In speaking of the num-
Der Of men employed there, he says
that at the Robinson Deep mine
alone there are $500 black natives
and 270 white men employed and
the average output of that mine
alone is about 10000 tons of reef.
The work is done by two eight
hour shifts and the output is sent
to stamp mills and then cyanided
The average value of the ore is
SIS per ton except in the high
grade ore, which at times runs as
high as hundreds OF dollars per ton.
The producing gold mines on the
Witwatersrand are ga in number,
and the gold produced therefrom
. for last July amounted to SIS, 93S,
000. These mines employ 24,63S
white men and 200, 900 blacks The
number of stamps employed for the
treatment of ores that month was
$500 At present the Rand people
boast of having the largest stamp
mill in the world, having 1000
stamps, each Weighing 1900 pounds.
Mr.. Gerhardi is the possessor of
medal for bravery in rescue work
awarded him by the st. Johns Am
bulance association of johannesburg
for rescue work. During Septem-
Der, 1910, an accident occurred at
the Robinson Central deep mine, 8
compressor on the 18th level stop
ped and the men employed beyond
that point were overcome by gas
The unfortunates were / . blacks,
and as soon as the news had reach
ed the surface a rescue party OF
five white men was sent down and
they too were overcome by the
gases. BY that time Mr.. Gerhardi
had been notified of the accident
and he entered the mine in an eff
fort to ascertain the extent of the
accident and to assist in the rescue
work. Upon arriving at the point
where the miners had been work
\ ing he found that the rescue party
4 had suffered the same affliction as
i the miners Acting quickly he sue
4 ceeded in carrying the entire party
y to the shaft and hosting them to
n the surface alive He was confined
\ in the hospital for four months fol-
lowing but suffered no permanent
q injury. After he was discharged
Y from the hospital the Duke of Con-
naught presented him with the
medal
Mr.. Gerhardi will remain in Ari-
:, IONA for the next year and then
4 sr