The Calumet news. [volume] (Calumet, Mich.) 1907-1938, 1910-03-18
Mining News

pleted. Two Stirling boilers, of $50
horsepower each are being placed on
their concrete foundations near the
McGaw shaft. With this additional
equipment, the development of the S.
& b. property below the 9th level can
be rapidly advanced. Nearly all the
ore to make up the daily shipment of
two carloads, now being sent to the
| Old Dominion smelter, is being mined
on the 9th level. Thus far, no perma-
nent arrangement for having the Su-
perior &, Boston ores treated has been
made. Various smelling companies
are submitting proposals and esti-
mates, and a permanent contract will
probably be made with the company
which shows most satisfactory results.
The arrangements estimated produce
ton for March, covering a period of 81
days, is $3.50 tons, averaging per
cent copper and capable of yielding
under treatment, approximately 100000
pounds of copper. In addition to the
copper contents, this quantity of ore
Is estimated to contain about 10000
ounces of silver. The silver i'm the Su-
peror & Boston ore is nearly great
enough to meet the smelling charges.
| The first shipment of ore sent to the
Old Dominion smelter weighed 147 tons
and ran 0.26 per cent copper, besides
containing also AIS OF. of silver to the
ton. The second shipment to the smell
ter amounting to 1872 tons, carried 10
per cent copper and 6.5 ounces of sill
yer to the ton. None of this ore was
selected for shipment. In the western
part of the mine, stopping without tim
herring was recently commenced ana
has proven successful. BY adopting
this method of mining the Superior K
Boston Copper company will probably
reduce it's mining expense at least 81
ton. The Great Eastern winze, now
being sunk below the 9Th level is in the
same character of ore as that mined
above the 9Th level, so that the pros
poets are excellent for developing val
liable copper deposits at considerably
greater depth than has ever been an
ticipated. Pres. VIM. G.. Rice. who
with Consulting Engineer f. II. Pro-
bert. is visiting the mine, makes the
following statement concerning recent
DEVELOPMENTS: "The latest operations
from the Gardner shaft have been most
encouraging. ore has been encounter
ed i'm the west drift which, according
IN latest returns, runs better than six
per cent copper This drift apparent
~, Is directly over the ore body Ar
rangements are now being made to eX-
plore this body of ore below the 400
foot level where the drifting is now
being done. At the place where the
crosscut struck ore the vein Is so rect
wide and varies from that width to 10
feet. as shown by developments so far.
one of the encouraging features in the
mine is that although we expected TO
get into secondary ore before ana
look for Il at the 9th level, the fact that
we are still i'm the oxidized zone is en-
couraging in that we can REASONABLY
expect a more extensive zone of en-
riched ore at greater depth than was
anticipated The original theory con-
corning the mine was that at 300 or
1000 feet primary ore would be en-
countered. This theory may SIN prove
correct but inasmuch as the WORKINGS
orc stiu in the oxidized zone. there Is
every reason to believe that hish sraue