Bayhorse Silver Reports 99 Plus Percent Selective Antimony Leaching Results From The Silver, Copper, Antimony and Zinc Concentrate From Its Bayhorse Silver Mine
December 8, 2025. BHS2025-32
Bayhorse Silver Reports 99 Plus Percent Selective Antimony Leaching Results From The Silver,
Copper, Antimony and Zinc Concentrate From Its Bayhorse Silver Mine
Bayhorse Silver Inc, (BHS: TSX -V, BHSIF: OTCQB, 7KXN: FRANKFURT) (the “Company” or
“Bayhorse”) has received excellent positive Antimony leaching results of about 99.9% selectively
removed from the 5.85% Antimony contained in the “refractory tetrahedrite” Bayhorse Silver Mine
concentrate (silver/antimony/copper/zinc) submitted to Allihies Engineering, (AEI).
Both the head and leached sample w ere submitted to Eagle Engineering (Eagle) of Butte, Montana,
for AMICS metallurgical analysis, which determined the leachable Antimony was in the form of
Skinnerite, (Cu3SbS3) a 50/50 composite of Antimony and Copper. This was readily and selectively
leachable using the AEI proprietary leaching process. The contained copper in the non-leached
concentrate was 5.79% and the zinc was 10.53%.
The silver, antimony, copper and zinc at the Bayhorse Silver Mine are all recognized as “critical and
strategic minerals” in the United States , however, e xtracting the silver from refractory minerals
presents several challenges as the complex mineral structures often leads to lower recovery rates
compared to free-milling minerals.
With AEI demonstrating their proprietary leaching process permits the cost- effective separation of
the antimony , that should significantly increase recoveries of the silver, copper and zinc for
processing separately. The Company is investigating whether a pilot scale antimony leaching facility
can be installed at the Bayhorse Mill in Payette, Idaho to leach the ready to process concentrate at
its Payette Mill.
Bayhorse CEO, Graeme O’Neill, comments, “the Company has researched effective leaching methods
on the “ refractory” Bayhorse “critical minerals” for over ten years in order to get better silver and
copper recovery. Now, with these significant selective Antimony leaching results breaking down the
refractory nature of the mineralization, all of the silver, copper antimony and zinc mineralization may
be readily separated with much better recoveries and can become payable, with the antimony
shipped as a separate payable material.”
The dominant Bayhorse mineralization is primarily tetrahedrite, (see the Company’s news release
BHS2020-12) that is comprised of the critical and strategic minerals in an antimony sulfide of silver,
copper, zinc and iron in veins and stockworks with minor gold present, and is refractory in nature.
The Bayhorse exploration model holds that the silver- copper-antimony rich mineralization at the
Bayhorse Silver Mine extends across to the adjacent Pegasus porphyry copper prospect and could
have its source in an underlying shallow pluton(s) that may host porphyry copper mineralization
similar to what Hercules Metals has reported 40 km north of the Bayhorse Silver Mine.
Cautionary statement
The Company is not basing any decision to produce on a feasibility study of mineral reserves
demonstrating economic and technical viability and advises there is an increased uncertainty and
specific economic and technical risk of failure with any productio n decision. These risks include, but
are not limited to, (i) a drop in price of commodities produced, namely silver, copper, lead and zinc,
from the pricing used to make a production decision; (ii) failure of grades of the produced material
to fall within the parameters used to make the production decision; (iii) an increase in mining costs
due to changes within the mine during development and mining procedures; and (iv) metallurgical
recovery changes that cannot be anticipated at the time of production.
All statements herein, other than statements of historical fact, including, without limitation, plans for
and intentions with respect to the Company’s capitalization, preparation of technical reports,
proposed work programs, budgets and proposed expenditur es, permitting, construction and
production timing are forward looking statements. While the Company believes such statements are
reasonable, no assurance can be given that any expectations will prove to be correct and the forward-
looking statements are not guarantees of future results or performance and that actual results may
differ materially from those in the forward -looking statements. Readers should not place undue
reliance upon forward-looking statements and the Company undertakes no obligation to re -issue or
update any forward-looking statements as a result of new information or events after the date hereof
or as may be required by law. All forward-looking statements and information herein are qualified by
this cautionary statement.
This News Release has been prepared on behalf of the Bayhorse Silver Inc. Board of Directors, which
accepts full responsibility for its content. Mark Abrams, AIPG, a Qualified Person and Director of the
Company has prepared, supervised the preparation of, or approved the technical content of this news
release.
On Behalf of the Board.
Graeme O'Neill, CEO
866-399-6539
About Bayhorse Silver Inc.
Bayhorse Silver Inc. is an exploration and production company with a 100% interest in the historic
Bayhorse Silver Mine located in Oregon, USA with a National Instrument 43-101 inferred resource of
292,300 tons at a grade of 21.65 opt (673 g/t) for 6.3 million ounces of silver. (Turner et al. 2018) and
the Pegasus Project, a highly prospective porphyry copper prospect, in Washington County, Idaho.
The Bayhorse Silver Mine and the Pegasus Project are 44 km southwest of Hercules Metals’ porphyry
copper discovery. The Bayhorse Mine is a minimum environmental impact facility capable of
processing at a mining rate up 200 tons/day that includes a state of the art 40 ton per hour Steinert
Ore-Sorter that reduces waste rock entering the processing stream by up to 85%. The C ompany has
established an up to 60 ton/day mill and standard flotation processing facility in nearby Payette
County, Idaho, USA with an offtake agreement in place with Ocean Partners UK Limited. The Company
has an experienced management and technical team with extensive mining expertise in both
exploration and building mines.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this
release.