BAYHORSE ACHIEVES 95% SILVER RECOVERIES FROM BAYHORSE SILVER MINE CONCENTRATES, UTILIZING MINERAL SOLUTIONS LLC LEACHING AND REFINING PROCESS.
April 15, 2019 BHS2019-09
Bayhorse Silver Inc., (“Bayhorse” or the “Company”)
BHS: TSX-V, has received final results from the comprehensive metallurgical testing,
setup, and processing/refining program conducted by Mineral Solutions
LLC (“Minerals”) of Coeur d Alene, Idaho, USA, on silver concentrates from
its Bayhorse Silver Mine, Oregon, USA.
This final exhaustive metallurgical testing was conducted
to ensure that both Bayhorse concentration equipment, and the Minerals
processing facility, are attuned for optimum processing/refining
recovery of silver from the Bayhorse mineralization.
Dr. Mike Irish of Minerals oversaw the final set up
at the Bayhorse Silver Mine to ensure the Bayhorse silver concentrate met their
parameters for leaching/refining using their wet chemical process for sulphide
Minerals had already tested the Bayhorse highgrade
mineralization, at 300 – 350 oz/ton Ag, (9,310 – 10,866 g/t) and compared the
results to lower grade mined mineralization. Fresh mineralization in a lower
grade section of the mine, in the range of 6 oz/ton to 20 oz/ton, (186.6
– 622 g/t) Ag was extracted from a new crosscut for this comparison.
The silver mineralization, with a calculated
head grade of 8.12 oz/t (252.5 g/t) Ag, was first processed through the
ore-sorter. As determined using mass balance calculations, ore-sorter upgrading
to 31.22 oz/t (971 g/t) Ag was achieved, with rejects grading 0.6 oz/t (18.66
g/t) Ag.The subsequent gravity concentrate, assaying 209.8 oz/t Ag
(6,525.5 g/t), was processed and refined by Minerals with 95% recovery, with
the tails grading 3.22 oz/t (100.15g/t) Ag.
With the final testing and equipment array set ups complete
at both Minerals and the Bayhorse Silver Mine, the Company is proceeding with
concentrating and shipping fresh sulphide concentrate to Minerals for
processing and refining into .9999 fine silver.
Dr Michael Irish, P.Eng, and Bayhorse Supervisor Jon Farrell reviewing ball mill oversize material
Bayhorse CEO Graeme O’Neill comments “we are very
pleased with the excellent final metallurgical results and silver recoveries by
Minerals. Our decision to collaborate with Minerals, utilizing newly developed
in America technological processes, in advancing our Bayhorse Silver Mine, instead
of directly shipping concentrates overseas for smelting and refining, was the
right decision and well worth the extra time it has taken to get things right.
The analytical method used for the silver analysis consists
of 1 Assay Ton (AT) samples subjected to fire assay with gravimetric finish. Assays
were conducted by Christopherson Umpire Assayers of Osburn, Idaho.
The Company is planning, in collaboration with
Minerals, a second, modular containerized processing and refining facility
in Canada for testing sulphide concentrates at the new Brandywine project, and for
processing and refining other available, identified, sulphide concentrates.
is not basing any decision to produce on a feasibility study of mineral
reserves demonstrating economic and technical viability, and also advises there
is an increased uncertainty and specific economic and technical risk of failure
with any production decision. These risks include, but are not limited to, a
drop in price of commodities produced, namely silver, copper, lead and zinc,
from the pricing used to make a production decision. Failure of grades of the
produced material to fall within the parameters used to make the production
decision and increase in mining costs due to changes within the mine during
development and mining procedures. There are also metallurgical recovery
changes that cannot be anticipated at the time of production.
This News Release has been prepared on behalf of the Bayhorse
Silver Inc. Board of Directors, which accepts full responsibility for its
contents. Dr. Stewart Jackson, P.Geo., a Qualified Person and Consultant to the
Company has prepared, supervised the preparation of, and approved the technical
content of this press release.
On Behalf of the
Graeme O’Neill, CEO
Inc., a junior exploration company, has earned 100% interest in the historic
Bayhorse Silver Mine Oregon, USA. and has optioned the Brandywine, precious
metals rich, volcanogenic massive sulphide property located in BC, Canada. The
Company has an experienced management and technical team with extensive
exploration and mining expertise.