Bayhorse Silver Confirms Concentrate Assays
February 20, 2020 BHS2020-01
BAYHORSE SILVER CONFIRMS CONCENTRATE ASSAYS
Bayhorse Silver Inc. (BHS: TSX-V) (the “Company” or “Bayhorse”) has conducted extensive
metallurgical work on a high grade sample from the Bayhorse Silver Mine, Oregon, USA., to
establish a smelter concentrate for submission to select smelters for off-take pricing.
A select 62.52 kg sample was milled and subjected to a known standard open circuit batch
concentration process whereby a gravity concentrate is made and the middling gravity recovery
would normally be resent through the milling circuit for further gravity upgrading. The subsequent
mineralized tails are subjected to further gravity recovery and flotation to create an overall
concentrate.
On a weighted average basis, the first gravity concentrate yielded 9.171.5 kg that contained 19,512.9
g/t (570.30 oz/short ton) silver, 25.9% copper, 14% antimony, 12.4% zinc, 4.1% arsenic, and 6.2%
silica. The partial results are tabulated below.
Concentrate
Weight
grams
Ag
g/tonne
Ag oz
short ton Cu % Zn % Sb %
As
% Si %
Weighted
Avg 9,171.50
19,512.00
570.30
25.90
12.40
14.17 * 4.10 6.2
(*Antimony is over limit by the assay method and should be viewed as approximate)
While normally the middlings of 7.63 kg would be recirculated through the mill to produce
additional gravity concentrate, in this instance the middlings are already of direct shipping grade of
10,443 g/t (313.97 oz/st) and are added directly to the gravity concentrate without further
concentration. Silver recovery was 27.8% to gravity concentrate, rising to 40.6% when middlings are
added to give an average grade of 15,528 g/t (439.7 oz/t). The table gravity tails of 45.7 kg, (73.1%)
containing 59.4% of the silver, also of direct shipping grade, were subjected to additional recovery
analysis using a Falcon Concentrator plus flotation.
Three passes of the Falcon Concentrator gave similar results of 11,646 g/t (340.4 oz/t) indicating
more passes would recover more silver. This gave a preliminary silver recovery of 67.9%.
A separate sample of the high grade table tailings was subjected to flotation at starvation reagent
levels. 45.3% of the residual silver was recovered at a grade of 13,450 g/t (393.4 oz/t), which is
equivalent to a combined gravity and flotation silver recovery of 67.2%. The resultant concentrate
analysis will give an indication of overall recovery. Concentrate test work is ongoing.
The results as shown are not indicative of actual mining grades.
The analytical method for silver analysis consists of 1 Assay Ton (AT) samples subjected to fire
assay with gravimetric finish. Base metal assays for the samples were subjected to an ICP MS35
element, four acid digestion assay.
The milling and gravity concentration program conducted by Met-solve Metallurgical Labs of
Langley, BC, was supervised by Consulting Metallurgist, John Fox.
Bayhorse CEO Graeme O’Neill comments, “we are very pleased with the initial gravity and flotation
recovery results, and the excellent concentrate grades for the smelter sample. We note that due to the
presence of high grade mineralization at the Bayhorse Mine, test work on the mineral liberation size,
flotation reagent levels and other specialized gravity recovery methods is ongoing to ensure
maximum recoveries to the concentrate.”
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 producti on 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.
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 pre paration of, and approved the technical
content of this press release.
On Behalf of the Board,
Graeme O’Neill, CEO
1-866-399-6539
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, and an option on the Brandywine, precious metals
rich, volcanogenic massive sulphide property located in B.C., Canada. The Company has an
experienced management and technical team with extensive mining expertise surrounding
exploration and building mines.
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