The Calumet news. [volume] (Calumet, Mich.) 1907-1938, 1911-10-24

Engineering World" stin remains that
The worlds deepest mines are not
those of gold nor yet Of the precious
metals, but rather in mines sunk after
that more lowly metal. copper-in the
Lake Superior region. The prospect
tor for gold is more than willing to
explore every nook and Granny on the
| surface the world Over-in the tropics
and in the arctics. in the lowlands
! and in the Alpine heights. He seems
/ to have been rather dubious, however,
as to explorations at depths.
The deepest gold mine in the world
was until lately that Of the New Chum
Railway company at Bendigo, Vic
toria, Australia. The New Chum
shaft is APO feet deep. II has lately
been surpassed in depth by the shaft Of
the Victoria Consolidated company, al
so at Bendgo. Victoria, Australia. The
New Chum shaft is APO feet deep. It
has lately been surpassed I'm depth by
the shaft of the Victoria Consolidated
company. also at Bendigo, sunk to
depth of 1900 feet. More recently the
record depth. for gold mines has passed
from the hands OF the Australians and
is now held by the British st. John del
Rey Gold Mining company, operating
i'm Brazil. At the Moro VeIho mines
Of this company in the State Of Mi
mas Geraes, the sixteenth level is 1925
feet deep; the present lowest level.
the seventeenth is 4,926 i'm vertical dis
lance below the collar of the main
shaft. and 4,6O2 feet below the adit
The Moro Velho ore body dips rough
ly 240 degrees so that the workings
extend downward along the reef at n
distance Of nearly 1000 feet. The deep
est American gold mine is believed 10
be the Kennedy shaft at Jackson, Cal.
the workings Of which are approx
imately $500 feet below the surface.
As previously stated. the worlds
deepest mines are In the Lake Super
Tor copper belt. No. shaft at the
Tamarack mine of the Calumet & Hec-
In Mining company was down a depth
last winter of 5,273 feet below the shaft
collar. 1t was planned 10 extend this
depth some ten feet farther. TO cut
out sump. This extension which Is
doubtless completed, makes the Tam
arack No. shaft the worlds only sin
gle shaft exceeding mile I'm depth.
No. shaft Of the Tamarack mine rep
resents probably the worlds deepest
actual workings No. shafts is down
1922 feet or as feet short Of a mile;
but some crosscuts and slopes bring
the bottom OF the workings down to n
total depth Of 5,S6S feet below the coll
lar of No. Tamarack shaft As tho
copper bearing Calumet conglomcrate
dips about SO degrees the lowest Tam
arack No. workings are nearly 5000
feet distant from the outcrop Of the
conglomerate. There must also be men,
toned in connection with the worlds
record shafts Of the Lake Superior
copper country. tho No. Calumet
shaft Of the Calumet & Hecla Mining
company. This Is the worlds longest
inclined shaft. It is now down TO tho
S1st level, or approximately $500 feet
along the slope Of the conglomerate. at
an incline Of about IS degrees
The reason why the worlds deepest
Afhh'H hA' ii'A III AAlt HifNiVuH ~ltlH
is probably not hard 20 find. To foster
such deep workings there must be at
hand, first. not merely a supreme and
abiding faith. but n scientifically as
sured or proved confidence in the con-
tinuity and workableness OF the dip
ping or other deeply buried ore body.
Then too, there must exist eauable
working temperatures, easy water
drainage. cheap fuel supply. etc. In or
der 20 render operation profitable or
even possible. Last, but not least.
there must be at hand. an enormous
aggregate Of capital and geological and
mining skill The fortunate combina-
ton OF all these factors Is rare or un-
known I'm the precious metal mines,
and is Of commoner occurrence I'm some
OF the great American copper. iron and
some European coal mining companies.
II made into a single thread.
years product OF a sllxworm would
stretch around the world 100000