Giant Mining Submits Core For Assay From 1,963 Foot Hole Mhb-34 At Majuba Hill Copper Project- Advancing Critical Minerals In Nevada

Quality Assurance/Quality Control ("QA/QC") Measures, Chain of Custody

The Company utilizes a QA/QC program using best industry practices at the Majuba Hill Project. Drill core samples are sawn in half lengthwise and one half is placed in labeled cloth sample bags. Sample bags are transported from the Giant Mining secure warehouse to the ALS Labs Sample Prep Facility in Elko, Nevada. ALS Labs then securely transports the prepared pulps to their analytical lab in North Vancouver, B.C.

All samples are analyzed for copper, gold, silver, and 33 other elements. Gold is determined by ALS Labs method Au-AA23 which is a fire assay with an AAS finish on a 30-gram split. Copper, silver, and the remaining 31 elements are determined by ALS Labs method ME-ICP61 which is a four-acid digestion and ICP-AES assay. Approximately 5% of the submitted samples are drill duplicates and copper-gold-porphyry commercial standard reference material pulps.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by E.L. "Buster" Hunsaker III, CPG 8137, a non-independent consulting geologist who is a "Qualified Person" as such term is defined under National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43- 101").

About Giant Mining Corp.

Giant Mining is focused on identifying, acquiring, and advancing late-stage copper and copper/silver/gold projects to meet the growing global demand for critical metals. This demand is driven by initiatives like the Green New Deal in the United States and similar climate-focused programs worldwide, which require substantial amounts of copper, silver, and gold for electric vehicles, renewable energy infrastructure, and the modernization of clean and affordable energy systems.

The Company's flagship asset is the Majuba Hill Copper, Silver, and Gold District, located 156 miles (251 km) from Reno, Nevada. Majuba Hill is situated in a mining-friendly jurisdiction with supportive regulations and has the potential to become one of the next major copper deposits, critical for meeting the increasing need for this red metal.

Market Awareness

The Company has entered into extended its Agreement with Gold Standard Media, LLC ("GSM") and its affiliates will continue to provide the Company with advertising services including (i) creating landing pages, (ii) digital marketing, (iii) email marketing, and (iv) influencer marketing. The Extension Agreement is for an additional six (6) months to the original term as previously announced on January 10, 2025 in consideration of a payment of up to $400,000 USD. GSM has a business address located at 723 W University Avenue, Georgetown, TX 78626 and can be contacted at +1 512-843-1723 or ceo@goldstandardir.com. GSM and its principals are arm's length from the Company. The Company shall not issue options or other securities in consideration for GSM's services.

The Company further announces that it has engaged the services of 1123963 B.C Ltd. DBA Capitaliz On It ("Capitaliz"), a social media influencer focused digital marketing agency out of Vancouver, BC, to increase investor awareness and interest in the Company as well as attracting new investors through various online platforms and a comprehensive digital media marketing campaign for the Company. Capitaliz has been engaged for a period of three (3) months commencing June 9th, 2025 for USD $90,000. Capitiliz is at arms length to the company and the principal doesn't own any shares of Giant Mining Corp. Capitaliz can be reached by email at charles@capitalizonit.com or by phone at 778-237-1431.

The Company further announces it has engaged Consultant Feneck Consulting Group, LLC ("Feneck") for certain capital markets, strategic marketing and investor relations services to raise Giant's investor profile . The agreement is effective as of May 20, 2025 and shall continue until November 19, 2025 and may be extended for additional six month increments by the parties' mutual written agreement beginning on November 20, 2025; and (ii) the Company will pay the Consultant cash in the amount of US$15,000 for the period May 20, 2025 to August 19, 2025 and cash in the amount of US$22,500 for the period August 20, 2025 through November 19, 2025. Feneck Consulting Group, LLC can be reached by phone at +1 732-300-5451 and by email at john.feneck@gmail.com

Furthermore, the company announces it has extended its agreement with Plutus Invest & Consulting GmbH ("Plutus") as of May 28th, 2025 for an additional term of two (2) months in consideration for a payment of EUR 160,000 to provide consulting services related to advertising, marketing, PR strategies and investor awareness in the European market. Plutus has a business address at Buchtstr. 13, Bremen 28195, Germany and can be contacted at (email: contact@plutuinves.de), or by telephone: (+49 42117540174?). Plutus (including its directors and officers) has an arm's-length relationship with the Company. The Company will not issue any securities to Plutus as compensation for its marketing services.??

Neither the Canadian Securities Exchange nor its Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.

On Behalf of the Board of Giant Mining Corp.

"David Greenway"

David C. Greenway

President & CEO

For further information, please contact:

E: info@giantminingcorp.com

P: 1 (236) 788-0643

VISIT OUR WEBSITE FOR MORE DETAILS

www.giantminingcorp.com

LIKE AND FOLLOW

Instagram, Facebook, Twitter, LinkedIn

DOWNLOAD INVESTOR INFORMATION

Click Here

Forward-Looking Statements

This news release contains certain forward?looking information. Such information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from those implied by statements herein, and therefore these statements should not be read as guarantees of future performance or results. All forward?looking statements are based on the Company's current beliefs as well as assumptions made by and information currently available to it as well as other factors. Readers are cautioned not to place undue reliance on these forward?looking statements, which speak only as of the date of this press release. Due to risks and uncertainties, including the risks and uncertainties identified by the Company in its public securities filings, actual events may differ materially from current expectations. The Company disclaims any intention or obligation to update or revise any forward?looking statements, whether as a result of new information, future events or otherwise.

###

Copyright (c) 2025 TheNewswire - All rights reserved.