The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1916-04-27

however. was considered to be posi-
lbly only a local condition since ad-
Joining properties had developed ore
bodies Of persistently good values and
dimensions at a much greater depth
than the lowest level of the Marsh ana
therefore established a precedent. At
ter analyzing all conditions the trus-
tees resolved to carry the development
of the property to greater depth.
up to this time all hosting opera
lions from the 6S7 and 55O-foot levels
to 399-foot level had been carried on
through the vertical winze by means
of two air hoists operating at MAXI
mum capacities as to tonnage and
depth, and all material hoisted had to
be transferred by hand tramming, on
the g9-foot level from the vertical
winze to the incline Wine, a distance
of about 200 feet and then hoisted to
the adit tunnel level. In addition to
the limited capacity this two stage
hoislng operation was very inefficient.
Therefore, before any deeper OPP
erations were to be undertaken 1t be-
came necessary to carry to compile
ton the remainder of the uncompleted
plan previously stated, /. e.--connecr-
ing the triple compartment vertical
winze with the adit tunnel level, a
distance of S99 feet vertically. and
! tuif al "a
hosting machinery. This work was
! begun in June, 1914, and completed in
January, 1915, and we now have YER
tical winze completely equipped with
modern hosting facilities through
which all hosting work Is done.
During the year 1915 shaft sinking
was resumed from the 6S7-foot level
and carried to a depth of $40 feet. At
the end of the year a level was in pro-
cess of development from this shaft at
9O7 feet depth. Developments here
tend to show further decline in the
amount and assay value of the ore as
compared with levels above. / would
estimate about 1900 square feet stop
! ing area, and assaying approximately
4.3 per cent lead, 4.3 per cent zinc and
30 ounces silver as judged from the
mill feed Ratio of silver 0.67 ounces
to | per cent lead,
"A crosscut to the north through the
Got En- Now claim was run for the
purpose of exploring a vein which had
been exposed in that claim near the
surface at a point about 400 feet ver-
tcally above and 500 feet to the east
of this crosscut. This work did not
disclose any new veins. A fault was
intersected near the face and on the
east side of the crosscut, which might
have terminated the vein in question.
"Ore reserves partially blocked out
December 81, 1915, approximately &c.,
600 tons"
Mill Improvements Justified.
Manager Greenough explains the
milling situation early in 1915, show
ing that the company was confronted
with the necessity of completely re-
modelling the Nine Mile mill which it
had under lease or building new one.
The trustees of the company decided
upon the former course, and the
changes were accomplished during the
| year. OF the result Mr. Greenough
says:
'The remodeling of the mill has JUS
titled the expenditures. Under the for
mer conditions the best extractions,
considering both lead and silver, were
made during the year 1914 when 7346
per cent of the lead and 65.11 per cent
Of the silver was recovered. The ex-
fractions were obtained on compare
chiefly in the slime end of the mill
During the six months operation in
1915 with the remodeled mill, the ex-
fractions We're increased to $3.50 per
cent of the lead and 7416 per cent of
the silver on an ore more refractory
than any previously treated. These
extractions would have been slightly
higher had the flotation plant been in
operation for the full period, this part
of the plant being idle for about
month or one-sixth of the operating
time"
Conclusion.
Mr. Greenough closes his exhaustive
report with the following conclusion:
"The general breadth of the explor-
alton and development work perform
ed with the exception of the Got En-
Now crosscut has been confined to
following various spurs from the main
vein, together with some short cross
cuts, all Of which have failed to ex-
pose any commercial ore. Very limit
ed funds have been available for such
exploration work.
Present indications are that the net
proceeds from the mining of ore re-
serves now exposed will not provide
any surplus funds for a, continuation
of the operation and development of
the property.
"a problem that must now be de-
cided by the trustees is whether or not
further exploration work is to be car
ried on either by sinking or exploring
new ground. And If so, the manner of
providing funds for such work The