Mr. David Greenway reports

GIANT MINING ALIGNS WITH WHITE HOUSE "AMERICA FIRST" STRATEGY TO FAST-TRACK CRITICAL MINERALS AND RESHORE THE U.S. COPPER SUPPLY CHAIN

Giant Mining Corp. and its stakeholders at the flagship Majuba Hill copper-silver-gold project in Pershing county, Nevada, fully support the United States government's renewed commitment to fast track permitting for critical mineral projects as a matter of national security.

David Greenway, chief executive officer of Giant Mining, commented: "The 2025 drill season at Majuba Hill marked a bold leap forward -- our most ambitious and technically advanced campaign yet, building on the exceptional grades we achieved in 2024. Under the strong leadership of President Trump, the United States has issued a clear call to action: secure the metals that power our energy independence, national defence and critical infrastructure. Giant Mining stands ready to answer that call. With Majuba Hill, we are proud to lead the charge in reshoring copper production, revitalizing U.S. mining districts and driving long-term value for shareholders -- all while putting America first."

The company applauds the strategic initiatives announced by President Trump's administration, which align directly with Giant Mining's mission to develop secure, domestic copper supply chains. These initiatives include:

Fast-tracked permitting

Following the March 20, 2025, executive order, copper has been formally designated under FAST-41, significantly accelerating environmental and land-use reviews. The era of decade-long permitting delays is ending.

Defense Production Act mobilization

The U.S. government is deploying the Defense Production Act and launching new federal financing programs to expand domestic mining and reduce reliance on foreign supply -- essential to national defence and economic security.

Federal prioritization of copper

U.S. federal agencies -- including the Departments of Interior, Defense, Energy and Agriculture -- are now actively prioritizing the extraction of copper, rare earths, nickel and lithium on public lands. This supports infrastructure development, clean energy initiatives and military readiness.

Copper tariffs to reshore production

In July, 2025, the U.S. government imposed a 50-per-cent tariff on imported copper, a landmark policy designed to reduce reliance on foreign supply chains. This move made global headlines and has already triggered increased domestic demand for United States-sourced copper. For projects like Majuba Hill, this policy provides direct support by incentivizing local production and reinvigorating legacy mining districts across the country. 1

Giant Mining is proud to answer the president's call to action -- building strong, secure and sovereign supply chains that support American jobs, energy independence and economic security. With President Trump's clear directive to prioritize critical minerals under the America First agenda, we are committed to reshoring copper production and strengthening the backbone of the nation's industrial future.

Project development update

Giant Mining continues to advance exploration and development at Majuba Hill. The company recently engaged RESPEC Engineering to complete a National Instrument 43-101 mineral resource estimate (MRE) and is incorporating data from its recently completed spring drill program. Preparations are under way for an expanded summer drill program, positioning the company to apply for federal programs now available under the U.S. government's critical mineral initiatives. All assays are now pending from the company's spring 2025 drill program with results expected imminently.

Majuba Hill's critically important characteristics are as shown in the attached table.

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. The samples are placed in cloth sample bags and are transported from the Giant Mining secure warehouse to the ALS Labs sample prep facility in Elko, Nev. ALS Labs then securely transports the prepared pulps to their analytical lab in North Vancouver, B.C.

Drill core samples are sawn in half lengthwise and one-half is placed in labeled cloth sample bags. 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 per cent of the submitted samples are drill duplicates and copper-gold-porphyry commercial standard reference material pulps. The remaining pulps will be retrieved from ALS Labs.

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.

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 kilometres) from Reno, Nev. 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.

We seek Safe Harbor.