The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1917-11-15
SEVEN DEVILS DISTRICT
SHOWS MUCH ACTIVITY
COPPER DEPOSITS PROVED PER-
MANENT-DlScov OF
MANGANESE.

State Mine Inspector r. N. Bell has
just returned from trip to the Seven
Devils mining district. He reports
considerable interest in mining devel-
opment and leasing operations in that
region and says he encountered the
first serious snowstorm of the season
which amounted to blizzard and
piled up about four inches of snow on
the summit near the Peacock mine
says the Boise Statesman.
"rhe Seven Devils Copper company
at Landore" says Mr.. Bell, lis work.
ing IL men and extracting good ore
for shipment. This enterprise is be.
ing developed through deep adit
tunnel near the drainage level of the
long and has recently passed through
the ore bearing contact shown in the
upper tunnel, where the characteristic
soft copper sulphide and oxide mineral
is disclosed and presents a splendid
opportunity for drifting with the def :
mite prospect that the handsome ore
shoot disclosed in the DEBORAH tun-
mel, higher up the mountain, will
prove persistent to this deeper level
and may carry a better concentration
Of values"
1000 Tons Already Produced.
"The DEBORAH tunnel is $50 feet long
with a face depth of $40 feet. 1t car
ries an ore shoot 10 to 80 feet wide
that Is said to average 3 per cent cop
per and contains rich segregatons of
copper sulphide and oxide ores. Lin
tied stopping operations at this level
have produced 1000 tons. of shipping
ore that has ranged from to IA per
cent copper and the cobbings from
these shipments aggregate approxim.
ately 1000 tons which are said to av-
erage 3 per cent copper. 1t is believ-
ed that by preparatory concentration
and modern flotation methods the val
ues of this big ore body can be made
available for profitable operation and
the new strike in the lower tunnel en-
phasizes the probability of there being
permanence and continuity at depth
when fully drifted out.
"The ore occurs at a definite con-
tact of marbeliZed white limestone
and grano-diorite. 1t carries some
contact metamorphie' minerals, in
Guiding exceptional crystalline speci-
mems of garnet and epidote but not
an excess of these minerals like some
OF the deposits of this district. 1t is
probable that a copper producing OPP
GRAFTON of considerable capacity will
ultimately be established at this pro-
perty.
Diamond Drilling Done.
AT Deep creek the Red Ledge mine
has, been undergoing prospect devel-
opment by diamond drilling Fully
1000 feet of cores have been extracted
in four directions from this great
body of low grade copper sulphide
ore. The work has recently been sus-
pended through lack of agreement
between the owners and the party
who did the drilling. The cores
obtained while representing low val
ues in copper and fair values In gold
and silver, are believed to have war
RATED the proffer of much moro ev-
tensive diamond drilling tests to de-
termine fully the magnitude Of the
deposit and its localized bodies OF bet :
ter ore.
Al Homestead. Ore, in the Snake
river canyon, and in the same geo
logical lhovince as the Seven Devils
district, the operation and successful
development of the Iron Dyke nine
is the center of. activity. This prop
erty is situated 1000 feet from the
Idaho line in the thread of Snake
river, and 1t has been equipped with
an up-to-date all slime flotation pro-
cess mill that is said to be giving eX.
ceptional results aggregating 80 per
cent extraction of the ore values on
this property, which | am advised IS
opening up in a magnificent manner
in its deeper level. This has been en-
tended 500 feet below the lowest tun-
mel driven by the old company and at
that depth is reported to be 200 feet
wide, of good concentrating ore in the
form of massive segregations of chal-
copyrite and pyrite carrying good val
ues in gold and silver. Forty men are
employed underground and 20 above
ground in preparing for further deep
development. This mine is producing
and treating 125 tons of ore day and
making a daily output Of about 81 tons
of concentrates.
100 Feet Below River Level
"The enterprise is well capitalized
and is blessed with modern, up-to-
date management. Its success in the
deeper development of the property
has discounted the pessimistic views
of number of famous experts who
examined its former development
prior to the present operations, which
have established the fact that copper
ore bodies in the Seven Devils forma-
tons have in one conspicuous in
stance proved permanent to vertical
depth Of 1000 feet and 100 feet below
the level of Snake river.
"These interesting results have en-