Benchmark Expands Metallurgical Program at the Lawyers Gold - Silver Project
Benchmark Expands Metallurgical Program at the
Lawyers Gold - Silver Project
Edmonton, Alberta--(Newsfile Corp. - April 14, 2020) -
Benchmark Metals Inc.
(TSXV: BNCH) (OTCQB: CYRTF) (WKN:
A2JM2X) (the "
Company
" or "
Benchmark
") is pleased to announce that a shipment of representative drill core samples
collected from multiple gold-silver zones (Cliff Creek, Duke's Ridge and Amethyst Gold Breccia or "AGB" zones) at the Lawyers
Gold-Silver Project has been received in Vancouver, BC. These samples were selected to investigate the metallurgical
characteristics of the mineralization for potential bulk-tonnage mining. This work will expand upon historical metallurgical studies
that focused on the high-grade (>10 gram per tonne [g/t]) material from underground historical mining. The historical
metallurgical recoveries of the high grade gold-silver mineralization mined at the Lawyers property during the period 1989-1992,
averaged 93% for gold (Au) and 78% for silver (Ag) (Lane et al., 2018). Benchmark's flagship Lawyers gold-silver project is
located in the Golden Horseshoe of north-central British Columbia, Canada.
John Williamson, CEO, commented, "The expanded metallurgical program dovetails with our aggressive 2020 exploration and
drilling program. It will assist in defining drill locations, density and spacing to achieve a NI43-101 Mineral Resource Estimate.
This work is an initial step in designing process flowsheets, potential recoveries, initial capital costs and operating costs for a
future Preliminary Economic Assessment".
Metallurgical Program
The expanded metallurgical program will focus on characterizing the metallurgical properties for the bulk tonnage gold-silver
mineralization at three targets, as well as confirming historical data of related higher grade zones within the bulk-tonnage targets.
The testing techniques will comprise chemical and mineralogical analysis, comminution testing along with standard recovery
techniques including gravity separation, sulphide froth flotation and various cyanidation testing. From this, a conceptual flowsheet
will be established along with projected precious metal recoveries. Optimum process conditions including grind, retention times,
and reagent requirements will be investigated for the various mineralized zones.
The test work will be conducted on extended
continuous intervals of drill core rejects obtained primarily from the 2019 exploration program.
A total of 416 core sample rejects
totaling approximately 975 kilograms of material have been received at the laboratory. This material will be tested to confirm the
high-grade historical results and to provide metallurgical composites for the testing of potential open-pit, bulk-tonnage targets.
Upon completion of the 2020 exploration and 50,000 metre drill program, further metallurgical studies will refine the data from
the multiple deposits present at the Lawyers gold-silver project.
This initial expanded metallurgical program will better enable
composite selection from the 2020 drilling to more closely represent potential future bulk tonnage mining grades.
These results
will flow into a future Preliminary Economic Assessment.
Benchmark has engaged Frank Wright, P.Eng., of F. Wright Consulting Inc., of Delta, BC to oversee the metallurgical program.
Mr. Wright has over 30 years of operating and consulting experience in the fields of mineral processing and hydrometallurgy. His
career has spanned 20 years as a qualified independent professional engineer managing projects similar to Lawyers,
worldwide. His work to date has included the oversight of test programs leading to selected process development, the related
technical reporting and supervision of detailed engineering, as well as project commissioning and trouble shooting.
The metallurgical test work will be conducted by Bureau Veritas Minerals (BV) - Metallurgical Division laboratories of Richmond,
BC. BV has prior experience with the Lawyers Project, and is a globally recognized and certified testing facility with customers
ranging from small independent operators to large multi-national mining firms and consultants.
Historical Gold-Silver Recoveries
The historical metallurgical recoveries of the high-grade gold-silver mineralization mined at the Lawyers property during the
period 1989-1992 averaged 93% for gold (Au) and 78% for silver (Ag). These historical mining recoveries are considered good
and provide a preliminary indication that metallurgical characteristics for the Lawyers low-sulphidation epithermal deposits are
suitable for standard processing techniques, which should provide acceptable rates of metals recovery (Lane et al., 2018).
Limited metallurgical testing was performed in 2011 by BV on high-grade rock samples from mine site material at the Cliff
Creek zone (BV Project 1106711 report "Metallurgical Testing of Samples from the Mountainside Exploration Management Inc.,
Cliff Creek Mine Gold Project of central BC", April 27, 2012). The study results indicate that a sample with a head grade of 13.1
g/t Au and 765 g/t Ag at a primary grind of P80 108 microns was amenable to sulphide flotation yielding a sulphide concentrate
containing 318 g/t Au and 18,500 g/t Ag at recoveries of 88.8% Au and 83.1% Ag .
Quality Assurance and Control
The sampling program was undertaken by Company personnel under the direction of Rob L'Heureux, P.Geol. A secure chain of
custody is maintained in transporting and storing of all samples. Gold was assayed using a fire assay with atomic emission
spectrometry and gravimetric finish when required (+10 g/t Au). Analysis by four acid digestion with 48 element ICP-MS analysis
was conducted on all samples with silver and base metal over-limits being re-analyzed by atomic absorption or emission
spectrometry.
The technical content of this news release has been reviewed and approved by Michael Dufresne,
M.Sc., P.Geol., P.Geo., a qualified person as defined by National Instrument 43-101.
Grant of Options
Benchmark advises that it has granted incentive stock options to various directors, officers and consultants to purchase up to 6.4
million common shares exercisable on or before April 14, 2025 at a price of $0.30 per share.
In addition, incentive stock options
have been granted to consultants to purchase up to a further 200,000 common shares exercisable on or before April 14, 2021 at
a price of $0.30 per share.
About Benchmark Metals Inc.
Benchmark is a Canadian mineral exploration company with its common shares listed for trading on the TSX Venture Exchange
in Canada, the OTCQB Venture Market in the United States, and the Tradegate Exchange in Europe.
Benchmark is managed
by proven resource sector professionals, who have a track record of advancing exploration projects from grassroots scenarios
through to production.
ON BEHALF OF THE BOARD OF DIRECTORS
s/ "John Williamson"
John Williamson
, Chief Executive Officer
For further information, please contact:
Jim Greig
Email:
Telephone: +1 604 260 6977
NEITHER 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.
This news release may contain certain "forward looking statements". Forward-looking statements involve known and unknown
risks, uncertainties, assumptions and other factors that may cause the actual results, performance or achievements of the
Company to be materially different from any future results, performance or achievements expressed or implied by the forward-
looking statements. Any forward-looking statement speaks only as of the date of this news release and, except as may be
required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement,
whether as a result of new information, future events or results or otherwise.
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