The Calumet news. [volume] (Calumet, Mich.) 1907-1938, 1913-03-26
MINES AND MINING STOCKS

1000 lineal feet. The shaft was sunl
325 feet during the year, and will con-
tinue sinking. II is now down sos feet
below any stopping.
No. 6 Shaft.
The output of copper rock from No
6 shaft fell below that of the previous
wear. and was hoistcd from an aver
ave incline depth of four thousand
two hundred and sixty feet. There Is
no special change i'm the copper cons
tents Of the rock developed IN the bot.
tom of the shaft
The lineal feet of development for
the wear was iO.4Go. about one-half
Of which was ia the bottom. The de-
I velcpment work ahead Of the stopping
/ in the shaft is now upwards Of six
/ teen thousand lineal feet.
{ In this shaft the west branches eN-
clusNely are being mined on the up
per leyels-namely. the twenty-tifth,
the twenty seventh. and the twenty
ninth-vhere they are a little wider
than in No. shaft; Vet they have
the same general characteristics OF
irrcgularity OF width and copper con.
tents and produce low grade Of
stamp rock. Below the twenty ninth
level. they become narrower. From the
'Crty-six level 10 the forty ninth, the
grade OF stamp rock produced Is
fairly good and there is more mass
copper Below the forty-ninth level .
20 tho siNty-fourth level the west 4
branches widen out to a maximum .
width upwards of ten feet with an !
average If about seven feet They pro |
ducc a good grade Of stamp rock |
some Slopes are very rich in barrel /
and heavy mass copper
with depth the GENERALIZATION In I
the west branches Is extending .
greater distance 90 the north towards
30 shaft until at tho rty-siXt'
level il appears as though they may
merge into the south drift of that
shaft. There are a number of Slopes
rich in copper-namoly. the forty
third level south. the forty-siNth, the
forty-ninth. the forty-hrst, and ,hc
ffty- seventh levels north, while tho
levels from the nfty-scycnth To- the
sixty-frst south also have Slopes ricn
in copper These west branches Yield
ed practically all Of the small and
heavy mass produced 10y the shaft,
which was seven hundred and sixty
three tons.
The east branches of this shaft are
,cir. worked from the ffty-ninth low
u down 10 the bottom or siXty-cighth
eycl. AZ AT No. . shaft, they are
more uniform in width and copper
contents than tho west branches, and
average upwards Of seven feet, with
maximum Of ton feet. The produce
, fairly good grade OF stamp rock
The prospects for copper in the bot
ON Of this shaft are now better than
a any time during the past ten years
,r more. I
Mill and Smelter. !
Concerning the new milling system ;
Mr. Lawton SAYS. q
Tint work at the stamp mills has q
,ccn about tho same ~ In former G
ears. The investigation to promote Il
Efficiency and greater saving in cop '
yer. mentioned in former reports, has I
Practically reached satisfactory con q
fusion. ono unit OF a new system K
consisting Of hydraulic classifiers, jigs S
nd Symons rolls. will soon be Install .
"a on a normal working basis. to re-
luce an the oversize from the stamp
lead. and consequently to deliver a 4
Ia,sificd and finer crushed sands to 4
m the various machines in the mills, :
mi thrs 10 demonstrate the progress /
hat has been made. /
"A ucw twenty million gallon cen G.
riCuesl pump has been purchased as Z
duplicate pumping plant for increas- {
q protection In cases ~ emergency. ,
"One- man rigs were installed in the {
hrcc towers at the coal shed, and SIX {
cen pound toe rails were laid in or /
Ter to facilitate the operation of the {
automatic coal cars into tho shed. {
~ the shelter, repairs and re- !
.cwaIs have been somewhat numer- |
us during the year. so. > furnace was /
utreIy rebuilt Tho coal dock has I
occiycd extensive repairs. and SINH /
ar repairs and renewals viii be con- +
inucd during the coming year =