WEST Mining Completes Preliminary Metallurgical Tests with GOLD Recoveries Ranging from 85.5 to 93.9% at Kena GOLD Project, BC
WEST MINING COMPLETES PRELIMINARY METALLURGICAL TESTS
WITH GOLD RECOVERIES RANGING FROM 85.5 TO 93.9%
AT KENA GOLD PROJECT, BC
Vancouver, BC – October 4, 2022 – West Mining Corp. (“West” or the “Company”) (CSE:
WEST) (OTC: WESMF) is pleased to announce it has now received final reports for initial
metallurgical and mineralogical test work completed on the Gold Mountain and Kena Gold Zones of
its 100% owned Kena Gold-Copper project in southeastern British Columbia. The Kena Property
hosts several large gold and copper zones. The Kena Gold and Gold Mountain Zones contain the
recent gold resource estimate shells, hosting 2.77 million ounces of gold inferred and 0.56 million
ounces of gold indicated at 0.25 g/t cut-off (Bird, 2021; see News Release dated May 11, 2021).
Bureau Veritas Minerals Metallurgical Division conducted a preliminary metallurgical testing
program on two composite drill core samples – Composite 1 from the Kena Gold Zone and
Composite 2 from the Gold Mountain Zone. The goal of this test work is to evaluate the amenability
of these samples to conventional mineral processing procedures.
Composite 1 and Composite 2 assayed 1.0 g/mt Au and 0.906 g/mt Au, respectively, by averaging
standard fire assay and metallic assay results.
QEMSCAN Bulk Mineral Analysis (BMA) showed these the two test composites contained 3.7-
4.1% sulphide minerals, mainly as pyrite. Silicates were the dominantly gangue minerals.
Gold deportment study by Trace Mineral Search (TMS) showed that more than 99% of the gold in
these two composites occurred as very fine-grained native gold and electrum. About 24% of the
gold in Composite 1 were found in gold-tellurium bearing minerals. The average gold grain sizes of
these two composite samples ranged from 1.6 to 2.3 μm.
Bond ball mill work index testing showed a BWi of 11.0 kWh/tonne for Composite 1 and 16.0
kWh/tonne for Composite 2 at a closing screen of 150 mesh, indicating that the mineralization is
moderate-hard to ball mill grinding.
Three process options including sulphide flotation, bottle roll cyanidation and gravity concentration
were evaluated in this test program. The responses of the test samples to three process routes at grind
sizes varied from 75 μm to 150 μm are summarized below.
Sulphide flotation was able to recover up to 88.7% gold from Composite 1 and 90.5% gold
from Composite 2 respectively, at 13.1% to 15.2% mass pulls.
Bottle roll cyanidation of ground whole-ore yielded encouraging gold recoveries of 80.0-
85.5% from Composite 1 and 92.8-94% from Composite 2 by leaching at 40% solids for 72
hours using 1.0 g/L sodium cyanide.
Results showed that in direct cyanidation, Composite 2 was not grind sensitive in the size
range of 75 μm and 150 μm. In flotation tests, Composite 1 was not grind sensitive in the
tested size range.
Gravity concentration alone was ineffective to recover gold from these samples. Single pass
gravity concentration with cleaning yielded no more than 11.6% gold recoveries for both
samples.
A combination of gravity pre-concentration followed by cyanidation of gravity scalped
tailing at 75 μm grind resulted in gold recoveries of 81.4% and 95.6% for Composite 1 and
Composite 2, respectively.
A combination of gravity pre-concentration at 75 μm followed by flotation of gravity tailings
and then cyanidation of flotation concentrates yielded gold recoveries of 71.6% and 87.6%
for Composite 1 and Composite 2, respectively.
A comparison among test results from flotation and whole-ore cyanidation at 75 μm is presented in
the following table.
Process Options
Gold Recovery, %
Composite 1 Composite 2
Whole-ore Cyanidation 85.5 93.9
Flotation 88.7 90.5
This preliminary testing program showed that the two composite samples from the Kena Project are
amenable to whole-ore cyanidation and sulphide flotation processes.
“This recent metallurgical test work speaks volumes for the project and is a major step in our
advancement of Kena as a whole. Combined with the earlier resource estimate, the non-refractory
nature of the mineralization and the high gold recoveries are extremely positive parameters that allow
the Company to continue its successful path moving the project forward,” states Nicholas Houghton,
CEO of West Mining Corporation.
The initial phase of the 2022 diamond drilling program on the Gold Mountain Zone, now completed,
consisted of 2400 metres in 9 diamond drill holes. Pending assay results will be released upon
receipt.
Linda Dandy, P.Geo., a "Qualified Person" for the purpose of National Instrument 43-101, has
reviewed and approved the contents of this news release.
About West Mining Corp.
West Mining Corp. is a mineral exploration company acquiring and developing advanced and
prospective early-stage exploration projects. It is fully focused on its 100% owned, 9000 hectare
Kena Project located near Nelson, British Columbia. The Kena Project comprises three adjoining
Properties: Kena, Daylight and Athabasca. A recent NI43-101 resource estimate for Kena gave
561,900 oz Au indicated and 2,773,100 oz Au inferred in the Gold Mountain, Kena Gold and
Daylight Zones. The Kena Property also hosts the large Kena Copper Zone, along with with the
historic Euphrates and Gold Cup gold-silver mines. The Daylight property contains the historic past
producing Daylight, Starlight, Victoria, Irene and Great Eastern gold mines. Along trend to the north
is the Athabasca Property, with the historic Athabasca Gold Mine. The historic mines and known
mineralized zones on these three properties are structurally controlled along a 20 kilometre strike as
identified by strong geophysical signatures.
For additional information, please refer to the Company’s public disclosure records available on
SEDAR at www.sedar.com.
West Mining Corp.
Nicholas Houghton
President & CEO
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