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Aug 29, 2023

Goldstrike / Copper

(TheNewswire) Vancouver, BC - TheNewswire - August 24, 2023 - Guyana Goldstrike Inc. (the “ Company ” or “ Goldstrike ”) (TSXV:GYA) , dba Copper-X Mining Inc., is pleased to announce that theCompany

(TheNewswire)

Vancouver, BC - TheNewswire - August 24, 2023 - Guyana Goldstrike Inc. (the “ Company ” or “ Goldstrike ”) (TSXV:GYA) , dba Copper-X Mining Inc., is pleased to announce that theCompany has collected initial samples from the Jupiter Copper Project(“ Jupiter ”) for metallurgical testing of the previously announced Clean Copper RefiningProcess (see Press Release dated August15 th ). Material from Jupiter will be shipped to a US basedmetallurgy laboratory shortly for commencement of proof-of-concepttesting of a single step, environmentally benign refining process fromrun-of-mine material to copper plate.

Metallurgy

This approach uses molten salts as a medium for metalextraction instead of the conventional pyro, hydro orpyro–hydro-extraction processes. The molten salt process formetallic copper production uses unreactive, non-toxic neutral chloridesalts as the processing fluid, so it virtually eliminates the chanceof toxic emissions during the processing of copper ore to coppermetal. The processing salt is a specific eutectic molten salt. Thisparticular reaction fluid is environmentally benign, recyclable andtherefore low in cost, as well as having a low melting (melting point204°), high boiling point (800°) and is chemically, thermally andphysically stable, which are properties of the molten salt making it apractical extracting fluid (lixiviant) and the plating electrolyte forthe electrodeposition of copper metals. Since the salt is made ofnon-toxic elements, it emits no toxic vapors and is environmentallybenign. The emission of noxious vapors and risk of contamination toground water in the traditional copper thermal and electro-winningrefining processes is a significant environmental problem. As well,due to the environmental issues traditional refining is severelylimited in location, particularly in regard to new plants, forcingcopper miners to ship copper concentrate great distances inclusive ofgenerally two-thirds waste product using vast of amounts of marinediesel fuel in the maritime shipping and significantly increasing thecarbon footprint of the overall refining process, in addition to thereturn or export freight for the refined copper product. For example,Chile, the world’s largest copper producer, exports approximatelyhalf of its copper concentrate production (~28% Cu) for refiningelsewhere due to these limitations. Clean copper refining couldlargely eliminate this wholly inefficient process.

This process is done in one-pot using a eutectic moltenchloride salt, as both the copper extracting fluid ( lixiviant ) and the electrolyte for electrodeposition ofcopper metal. The salt is environmentally benign since it is made ofnon-toxic elements and emits no toxic vapors.

The copper completely dissolves when added to theaerobic eutectic molten chloride salt contained in a pot. After thecopper ore is digested, a graphite rod is inserted in the molten saltmixture to serve as an anode. A power supply is connected to thegraphite rod and the container, which serves asthe cathode, and then the copper ions in the molten salt are reducedand deposited as copper metal, which sinks to the bottom of the pot,since copper is much denser than the salt. On a large scale, opening avalve at the bottom of the pot allows for the harvesting of the coppermetal product by simply draining (tapping) the copper out ofpot.

QualifiedPerson

Andris Kikauka (P.Geo) is a Qualified Person inaccordance with National Instrument43-101 – Standards of Disclosure for Mineral Projects , and has reviewed and approved the scientific and technicalcontent of this news release.

On behalf of the Board of Directors,

GUYANA GOLDSTRIKE INC. / COPPER-XMINING INC.

Peter Berdusco

President/CEO

877 704 1119

[email protected]

copper-x.com

The TSX Venture Exchange has in noway passed upon the merits of the proposed Transaction and has neitherapproved nor disapproved the contents of this press release. Neither the TSX Venture Exchangenor its Regulation Services Provider (as that term is defined in thepolicies of the TSX Venture Exchange) accepts responsibility for theadequacy or accuracy of this release.

This news release may containcertain “Forward-Looking Statements” within the meaning of theUnited States Private Securities Litigation Reform Act of 1995 andapplicable Canadian securities laws. When used in this news release,the words “anticipate”, “believe”, “estimate”,“expect”, “target, “plan”, “forecast”, “may”,“schedule” and other similar words or expressions identifyforward-looking statements or information. These forward-lookingstatements or information may relate to the intended development ofthe Project, and other factors or information. Such statementsrepresent the Company’s current views with respect to future eventsand are necessarily based upon a number of assumptions and estimatesthat, while considered reasonable by the Company, are inherentlysubject to significant business, economic, competitive, political andsocial risks, contingencies and uncertainties. Many factors, bothknown and unknown, could cause results, performance, or achievementsto be materially different from the results, performance orachievements that are or may be expressed or implied by suchforward-looking statements. The Company does not intend, and doesnot assume any obligation, to update these forward-looking statementsor information to reflect changes in assumptions or changes incircumstances or any other events affections such statements and information other than asrequired by applicable laws, rules and regulations.

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