The Calumet news. [volume] (Calumet, Mich.) 1907-1938, 1913-03-19
REPORTS
ON S. & B. Mine
Stockholders Engineer Says Il
Will Make Profitable Property

Il Boston mine was recently made h'
j. A. Thomas, mining engineer. espe
cialy selected by them, His complet.
report follows.
The Superior X Boston Mine is prac-
tcally a virgin property as all The
pre-, ious work has been carried on in q
badly faulted zone ana any ore bodies
encountered la this zone would neces-
sarily be- small. as they would be cat
oft by cross faults ana the country is
So badly assured that it is unfavorable
10 the precipitation Of ore IN large
quantities
The development work on the Supe-
rior x Boston property has all been an
the west end of the property and has
beer carried on so as 10 develop three
different Lodges. namely: Black oxide.
Limestone, and Great Eastern lodges.
The Gardner shaft and the BLACK
oxide tunnel were used 10 develop tn"
Black oxide ledge This ledge wher"
encountered in IA Black oxide tunnel
and on the 400 foot level from the
Gardner shaft showed up iron oxide
and a. per cent copper. The copper
values We're not high enough 10 bee
probably mined and shipped away for
treatment bat If in the future develop
meut ct the mine il would become nee.
essary for the company To- operate "
smc!trr of its own. this ore could DC
worked at a good profit. ! do not think
m, leuge has been developed enough q
4 .4H
there or not The ledge did not con
tlnue east but was displaced by
cross fault and crosscuts We're driven
north and south of the Gardner shafi
10 pick up this ledge but did not do
$50. ! think the ledge could be picked
mp by continuing the crosscut south "a
The end uf thr crusscut is in lime AMI
there is ledge showing on surface
having lime diabase contact
The Limestone shaft is three hum
dred feet deep and narrow ledge oi
ore was encountered on the second ana
third levels where Stopping has been
done. The ore carried copper values
between and \ per cent and is at
present worked 10y leasers. The ore
ranges In width from "a streak 10 two
feet. This ledge was also cut OF from
The extension east by "A ss-fault
The McGaW shaft is 200 feet deep
and all the present development work
Is carried on here The Great Eastern
ledge was struck from this shaft and
good copper values were found IN this
ledge between the ith and 9th levels
$5tO.uO0.uu worth of copper al "A pre-
yaHnp price Of l2lac was taken out IN
q space three hundred feet ia length
and one hundred twenty five feet in
depth The ledge was displaced 10y a
fault Al 300 east OF the west boundary
of the Superior q Boston property
This ledge was picked az again ON
the ,th level east. and showed that IL
has been displtced southeast 500 feet.
The ledge carried ore for 800 feet east
of the fault. bat was very variable IN
width, aGd should be crosscut To de
termine the amount Of ore cross
cut was run into the hanging and
showed ledge matter for 20 feet, which
consists OF oxide Of iron with copper
stain throughout
4 rais, is run ON this ore from the
eth level and at li5 feet 10 was found
that the ore was ON the hanging side
Of thr raise and the angle of the raise
wa. made sleeper 80 that IL exposed
ore AVERAGING a feet in width for 9h
feet with the same character OF ore
above. 4 ,rosscut driven ON the 9th
level exposed "a feet ot ore and This
ore has been drifted ON tor io feet
strong all the way. This
means that th- ore continues through
from tho raise 90 the bth level, which
lis , bod, OF ore IL feet in width and
al0 feet loo height al ~ per cent cop
Der which Is the average value OF cop
Der in both raise and 9th level. This
means yI40o0o for every foot along
the ledge that continues To hold IT'S
present width THIS ore extends above
the 6th I-yr and erussnut viii be
ran ON The ith level 20 strike il above
Crosscuts are being driven To- strik"
the on. below ou the 10th and l2th
levels The character of the ore should
change from oxides 10 sulphidcs az
about the 18th level There is now be
ing shipped about 80 tons of ore daily
from the development work carried on
In the raise and the running ~ the
9TH level drifts both east and west.
An three Of the lodges. namely Black
oxide Limestone ana Great Eastern,
have been worked west of the fault
which displaced them. ana In q country
that has been assured mp ! believe
IN. came lodges viii BE- encountered
east Of this faulted zone and lnrg"r and
better ore bodies should be found. 's
tho surface Indications show n" cross
tauItipg for q distance Of 1000 rect
which makes the conditions more Ia
yorable for the deposition of ore.
There are two other lodges parallel
m those already mentioned. one
trovn as the old Dominion fault ana
the other encountered on the 18th level
along the 1855 drift, which would he
well To develop cas-, of the cross
faults. a.,
NV advice il 10 drift east OF the
cross faults. then crosscut north ana
..,,,, r,ralIeI To- the crossfault. In
y 49,