Gold Hart Copper drills longest interval to date at Tolita, Chile

Completes Geochemical Survey at Nessa Properties in Domeyko Fault System of Chile; Advances Application ("Pedimento") For Copioso - Historic Gold Copper Silver Asset & Former Mine to Expand Portfolio of Prime Properties In Chile; Diamond Drill Core From Additional Hole DDHTOL04 at Tolita Asset in Vicuña District at Laboratory; Awaiting Results From 7 RC Drill Holes at Tolita Asset's High Grade Trench in Vicuña; Announces Closing of Acquisition of Rhyolite Resources Ltd. Toronto, Ontario--(Newsfile Corp. - July 2, 2026) - Gold Hart Copper Corp. (TSXV: HART) (the " Company ", " Gold Hart " or " HART ") is excited to announce the results of its first of nine drill holes from the spring 2026 season - DDHTOL01 - at its Tolita asset. The Company intercepted its longest interval ever, with 738m of mineralization. Gold Hart also provides an update on the comprehensive geochemical survey just completed at the Nessa Complex properties, as well as on the recently filed application ("pedimento") for an exploration mining concession (the " Application ") on the Copioso Asset , a historic gold-copper-silver asset and former mine, to expand its portfolio of prime properties in Chile.

The Company will be releasing results from the following diamond drill hole in addition to 7 shallower RC drill holes at Tolita's highest-grade trench, as the results come in over the summer. Results of DDHTOL01 at Tolita in Vicuña District - Longest Intercept to Date As prior announced, the Company recently completed 2 diamond drill holes at the Tolita Gold-Copper-Silver-Molybdenum Asset in the Vicuña District of Chile. Specifically, DDHTOL01 was drilled down to 1,053m and DDHTOL04 drilled down to 551m.

Drill results published today represent DDHTOL01 with results expected from DDHTOL04 in the coming weeks. Press Release July 2 2026 - 1 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_gold_hart_copper_-_press_release_july_2_2026_-_1.jpg Tolita DDHTOL01 - 2 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_gold_hart_copper_-_tolita_ddhtol01_-_2.jpg Gold Hart Copper geologists Rodrigo Diaz & Jonathan Warner commented: " The geological signatures observed in TOL-DDH-01, are among the most significant encountered to date from a structural and alteration perspective. We've confirmed Tolita to be a fertile porphyry environment to a kilometer depth, with continuous mineralization over 500m away from our prior drill hole.

"Unlike prior diamond drill holes, the mineralization was continuous for over 730m with no barren intervals intersected. Instead, continuous metal anomalies can be identified throughout most of the hole. When integrated with the results from previously drilled holes located several hundred metres apart, these anomalies suggest that the Tolita mineralized system has a substantial footprint.

"At the same time, the system remains open to the north and south along strike, providing compelling targets for future exploration. We hypothesize that a richer zone within the Tolita asset ought to exist, and results such as this drill hole are integral in narrowing down targeting of future drill holes. "We anxiously await results from the additional diamond drill hole plus the seven RC holes drilled into the high grade trench.

Results from these 8 holes should arrive over the summer and will be announced as HART receives them. "What's amazing about Tolita is the potential for something truly sizeable, in that to date every single hole drilled has intercepted gold & copper porphyry-style mineralization. We have only seen a few drill holes and we've barely scratched the surface with a lot more drilling to come." Tolita DDHTOL01 Relative to Asset - 3 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_gold_hart_copper_-_tolita_ddhtol01_relative_to_asset_-_3.jpg Tolita DDHTOL01 - 4 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_303714_gold_hart_copper_-_tolita_ddhtol01_-_4l.jpg Completion of 7 RC Drill Holes at Tolita Targeting High Grade Trench Up to 52g/t Gold Equivalent with 3.99% Copper As previously announced, in addition to Gold Hart's primary diamond drilling at its Tolita project, the Company added a reverse circulation (" RC ") drill rig in order to target certain higher grade opportunities closer to surface at Tolita.

Specifically, Gold Hart is targeting its highest grade trench, which grades 8.61g/t gold equivalent over 10m, including 2m at 10.40g/t gold, 20g/t silver, and 2.88% copper, and including grabs of 45.75g/t gold, 28g/t silver, and 3.99% copper (approximately 52g/t gold equivalent). Gold Hart recently opened up this high-grade trench with a bulldozer and exposed visible green and turquoise staining typical of copper minerals malachite and chrysocolla. Interestingly, the larger geophysical anomaly at Tolita appears to reach surface at or near this high-grade trench.

Gold Hart's Vice President Rodrigo Díaz Tillería commented, "Our focus remains the large-scale porphyry potential of Tolita. But Tolita also offers the rare opportunity to target and hopefully prove a high-grade shallower component of the asset. In the Vicuña District where 1g/t gold on surface is rare, we have 52g/t gold, and simply put, we need to test it.

RC drilling is significantly faster and cheaper, does not require water to operate, and is well suited to the characteristics of this target. Our current geological model assumes that this high-grade trench at Tolita may only be a fraction of the size of the larger system, but we do believe it hosts potential for generating higher grade intercepts close to surface and therefore potential to add high grade ounces, thereby demonstrating another facet to the Tolita asset." To that end, Gold Hart recently completed 7 RC drill holes at this high-grade trench, the first holes ever drilled into this trench. Results are expected over the course of the next month.

The Company has published a video from a recent site visit explaining the potential significance of this high-grade trench and associated rationale for the RC drilling: https://youtube.com/shorts/c7tBwz-8Bl4?si=5_8P2rFoOV6WlaD8 Tolita High Grade Gold Copper Trench on Large IP Anomaly - 5 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_gold_hart_-_tolita_high_grade_gold_copper_trench_on_large_ip_anomaly_-_5.jpg Land Position Vicuna and Domeyko - 6 To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/10786/303714_gold_hart_-_land_position_vicuna_and_domeyko_-_6.jpg Nessa Copper-Gold-Silver Complex - Completion of Comprehensive Geochemical Survey Following Prior Preliminary Survey's High Grade Results (Copper Up To 4.7% & Gold Up To 9.7g/t) Gold Hart is also pleased to announce that the Company has completed its prior announced first-ever comprehensive geochemical survey at the Nessa Complex just west of Kinross' La Coipa Gold Mine. This survey followed upon the success of the prior announced preliminary geochemical survey, wherein several samples returned high grades of gold and copper. Specifically, 7 samples graded 1.25% to 4.73% copper, including 4 samples exceeding 2.40% copper. 12 Samples graded above 1g/t gold, with 6 samples grading between 4.10g/t to 9.74g/t gold.

Gold Hart has had a team of 8 geologists and assistants leading this geochemical survey at Nessa, and the Company wishes to thank this team for their excellent work. This comprehensive geochemical survey initially targeted 500-1,000 samples, primarily within the Ringo claims of the Nessa Complex. The Gold Hart team collected approximately 750 samples.

Results are expected shortly and the Company hopes to be in a position to provide an update in this regard in the near future. Gold Hart Files Application ("Pedimento") for Copioso Asset to Expand Its Portfolio of Properties In Chile Per the Company's prior announcement, Gold Hart reported that the Company filed an application ("pedimento") for an exploration mining concession (the " Application ") referred to as the Copioso Asset , to expand its portfolio of prime properties in Chile. By way of update, the Company has advanced the process with a recent payment made to the government, and has been able to partially confirm its preferences on certain of the claims.

The Company awaits confirmations on the remainder of the property and hopes to be in a position to report further on this matter in the very near future. As prior announced, the Application for the Copioso Asset covers an area of interest in a historic mining district, which was mined intermittently in the past (the " Property "), and certain historical technical records reviewed by the Company reference multiple legacy mineral inventory interpretations prepared by prior operator(s) (each referred to as a " Historic Mineral Resource ") which are non-compliant within the standards of National Instrument 43-101 - Standards of Disclosure for Mineral Projects (" NI 43-101 "). The Property was mined more than a decade ago, and Gold Hart is aware of the presence of multiple historical underground workings, including adits/tunnels.

Gold Hart has reviewed certain historical records that appear to have been prepared contemporaneously with, or shortly following, the period of mining activity, which suggest that the Historic Mineral Resource estimates may have been derived from grades observed and/or sampled within these mined areas. Gold Hart has not yet obtained all historical documentation relating to the Property and will continue efforts to identify, compile, and review additional available information as it becomes accessible. Accordingly, any disclosure herein is based on the partial information reviewed to date and should be considered incomplete, and is therefore not to be relied upon.

A "pedimento" is the initial filing in a court-supervised process that, if completed successfully, results in the constitution of an exploration mining concession. Under the Chilean Mining Code, a "pedimento" that is duly filed and prosecuted in compliance with applicable legal requirements generally affords its holder priority to pursue the constitution of an exploration mining concession over the area covered, subject to no overlapping prior filings and successful completion of the judicial constitution process before the competent Chilean mining court. One Historic Mineral Resource estimated between 40,000,000 - 50,000,000 tonnes at 1.0% - 1.2% copper and gold grades between 0.5 - 1.0g/t.

Another Historic Mineral Resource estimated approximately double the tonnage at similar gold and copper grades, in addition to silver of approximately 10g/t. Utilizing current metal prices, the breakdown of the larger Historic Mineral Resource on the Property would be approximately 44% gold, 43% copper, and 12% silver 1 , totalling over 4,000,000 ounces of gold equivalent or over 1,500,000 tonnes of copper equivalent, assuming broadly comparable metallurgical recoveries. 1 Importantly, a Qualified Person has not done sufficient work to classify the Historical Mineral Resource as current mineral resources or mineral reserves, and the Company has thus far been unable to verify the reliability of either Historic Mineral Resource. The Company is not treating either Historical Mineral Resources as current mineral resources or mineral reserves, and they are non-verified historical estimates prepared prior to the Company's interest in the Property.

Gold Hart has not conducted its own analysis and intends to allocate a team of geologists in order to undertake a thorough review of the area covered by the Application. The disclosure is provided solely as an indication of the Property's exploration potential and to provide context for the Company's acquisition rationale. The Application "pedimento", once published in Chile's Boletín Oficial de Minería, becomes part of the public record.

However, the Company must refrain from providing further specifics regarding the Property and the area covered until the judicial constitution process is sufficiently advanced. There can be no guarantee that there are not any potential risks to completion of said process, and therefore no assurance that the Company will be granted the Property. In order to upgrade or verify the Historic Mineral Resources as current mineral resources or mineral reserves, the Company would have to review all project data, validate data quality, create a new geological model and then make an updated resource estimate.

The Historical Mineral Resources utilized categories materially different from current standards of mineral resources and mineral reserves. The Company's priorities have not changed as a result of the Company's Application for this Property. The Company's Tolita property remains the Company's flagship asset.

The Company will promptly allocate a team of geologists and a modest capital budget in order to undertake a comprehensive review of the area covered by the Property Application from a geological perspective. The focus of Gold Hart remains the Vicuña District and its flagship Tolita asset, with the Nessa properties west of Kinross' La Coipa Mine as a strong secondary complex. To that end, the Company completed 7 RC drill holes at the high grade trench of the Tolita property in the emerging Vicuña District of Chile, north of Lundin's Caserones.

Additionally, the Company today announced completion of the first comprehensive geochemical survey at the Nessa Complex of properties in the Domeyko Fault System of Chile, made famous for hosting Escondida, Chuquicamata, and Collahuasi mega-assets. Tolita - Flagship Gold Copper Moly Silver Porphyry Target in Vicuña District - Diamond Drilling Program Gold Hart geologists - including senior geologists Professor Dr. Jose Frutos, Enrique Viteri, Jonathan Warner, and Rodrigo Diaz Tillería - carefully designed a 10-hole drill plan in order to optimally test Tolita as a potential gold-copper-molybdenum-silver porphyry target. As prior announced, Gold Hart first attempted to drill target #1 known as DDHTOL01 in March of 2025, but after difficulties were encountered under tight time constraints, the team instead elected to drill DDHTOL02 and DDHTOL05.

These holes were approximately 600m each and encountered approximately 360m and 230m of gold, copper, and moly porphyry mineralization, respectively. Gold Hart returned to target #1 DDHTOL01 with a more powerful drill rig and completed a 1.053km drill hole, today announcing approximately 738m of mineralization. Interestingly, the core continued to display encouraging characteristics, with multiple intervals showing strong hydrothermal alterations and mineralization consistent with a fertile porphyry-style environment.

Gold Hart's geologists observed multiple generations of veinlets and stockworks with varying intensities over intervals up to several hundred meters, banded veinlets with thicknesses of several cm, and locally chalcopyrite and bornite mineralization has been recognized in several of these veinlets. HART's geologists do not believe the drill intercepted the same fault which caused a sterile zone in the middle of the initial 2 diamond holes. More recently, Gold Hart completed a follow-on diamond drill hole - DDHTOL04 - which reached 551m.

In addition to the diamond drill campaign, Gold Hart launched a campaign of RC drilling at its high-grade trench - with up to 52g/t gold equivalent including 3.99% copper on surface. The objective of the RC campaign is to demonstrate higher grade pockets close to surface, beyond the larger porphyry target. Gold Hart completed 7 RC holes and hopes to report results as they arrive.

As apart of the Company's initial 10 diamond drill hole campaign, Gold Hart has now completed 4 holes, with results now published for the first three. Interestingly, the Company has intercepted gold and copper mineralization in every drill hole to date. There await at least another six or seven highly attractive diamond drill targets identified across the asset area.

These targets are supported by a combination of geophysical characteristics, including chargeability and conductivity, strong geological and structural controls as well as coincident geochemical anomalies. Tolita is a very large target, with an original 2.5km 2 geophysical anomaly recently expanded by 76% to 4.5km 2 . The Tolita gold soil sample geochemical surface halo (an approximation of gold on surface above 0.1g/t) alone is nearly 28Ha and the Tolita property is 3,476Ha equal to approximately 34.8km 2 .

Furthermore, as recently confirmed in a follow-up geophysical survey, the Tolita geophysical anomaly expands in both size and intensity at depth, which could translate into an enlarging system at depth. Per the third party geophysicist who conducted the survey, " "The vertical extent of the steeply dipping conductor that is likely related to a fault is better defined on the two new deep lines (2600N and 452200E). This surprised me, as I had expected resolution similar to the first lines.

This would indicate to me, that the probable structure extends very deeply and has a strong contrast in resistivity with the host rock. Because it is conductive, it should act as good conduit for hydrothermal water flow, which should be good news for mineralization. There is confirmation that the alteration system extends to greater depth and may increase in intensity at depth as it is more conductive.

Hopefully, the copper and gold grades would increase correspondingly as well." Porphyry systems in Chile, and in the Vicuña District specifically, can prove larger and richer as they progress deeper. For example, in Chile, Atex Resources announced one of their most significant drill holes ever (ATXD25C) which graded 2.72% copper equivalent, beginning at 1,558m and ending at a depth of 1,722m. In the Vicuña District, NGEX published "DPDH028, the best hole drilled to date as Lunahuasi, which was drilled deeper and to the west of all previous holes", which included multiple highly compelling intercept including the deepest 53.5m (1,219.5m - 1,273.0m) grading 7.79% copper equivalent.

Gold Hart Copper Finalizes Acquisition of Rhyolite Resource Gold Hart Copper Corp. and Rhyolite Resources Ltd. (TSXV: RYE) (" Rhyolite " or " RYE ") are pleased to announce the completion of the previously announced business combination between Gold Hart and Rhyolite by way of statutory plan of arrangement (the " Arrangement ") under the provisions of Section 193 of Part 15 of the Business Corporations Act (Alberta) (the " ABCA "). Shareholders of Rhyolite approved the Arrangement on June 12, 2026 at Rhyolite's annual and special meeting of shareholders and the final order approving the Arrangement was issued by the Alberta Court of King's Bench (Commercial List) on June 22, 2026. The Arrangement was completed under the ABCA and was effective at 8:00 a.m. (Toronto time) on June 29, 2026.

Under the terms of the arrangement agreement between Gold Hart and Rhyolite dated April 6, 2026 (the " Arrangement Agreement "), which was negotiated at arms-length, upon the closing of the Arrangement, each holder of the common shares of Rhyolite (each, a " Rhyolite Share ") was entitled to receive one (1) Gold Hart common share (" Gold Hart Share ") for every 2.6 Rhyolite Shares held. The Rhyolite Shares are expected to be delisted from the TSX Venture Exchange effective as of the close of market on July 2, 2026. Rhyolite will submit an application to cease to be a reporting issuer under applicable Canadian securities laws and to otherwise terminate its public reporting requirements.

Satisfaction of Closing Conditions The Arrangement became effective upon the fulfillment of the closing conditions described in the joint news release dated April 7, 2026, as more fully described in the Arrangement Agreement. These conditions consisted of, among other things: (i) obtaining approval from Rhyolite shareholders; (ii) securing all necessary governmental and regulatory approvals, including interim and final orders from the Court of King's Bench of Alberta and approvals from the TSX Venture Exchange; and (iii) RYE achieving the required minimum working capital requirements. Information for Rhyolite Shareholders Certificates formerly representing Rhyolite Shares now represent only the right to receive Gold Hart Shares to which the holders are entitled pursuant to the Arrangement.

In order to receive their Gold Hart Shares, registered shareholders of Rhyolite must deposit their share certificates or DRS advice(s) with a completed Letter of Transmittal, as set forth in the information circular of Rhyolite dated May 12, 2026. The Letter of Transmittal was mailed to registered shareholders together with the meeting materials for the Rhyolite meeting and it is also available on Rhyolite's SEDAR+ profile on www.sedarplus.ca . Rhyolite shareholders who own their shares through a broker or other intermediary should contact such broker or other intermediary regarding their receipt of Gold Hart Shares under the Arrangement.

Further information regarding the Arrangement, including instructions on how to exchange Rhyolite Shares for Gold Hart Shares, is set out in the management information circular of Rhyolite dated May 12, 2026, a copy of which is available on the profile of Rhyolite on SEDAR+ at www.sedarplus.ca . None of the securities to be issued pursuant to the Arrangement have been or will be registered under the United States Securities Act of 1933, as amended (the "U.S. Securities Act"), or any state securities laws, and any securities issuable in the Arrangement are anticipated to be issued in reliance upon available exemptions from such registration requirements pursuant to Section 3(a)(10) of the U.S. Securities Act or other available exemptions and applicable exemptions under state securities laws.

This news release does not constitute an offer to sell or the solicitation of an offer to buy any securities. Advisors Bennett Jones LLP acted as legal advisor to Gold Hart. Cassels Brock & Blackwell LLP acted as legal advisor, and Evans & Evans, Inc. acted as financial advisor, to Rhyolite.

Early Warning Disclosure Immediately prior to the completion of the Arrangement, Gold Hart had beneficial ownership of, and exercised control and direction of nil Rhyolite Shares. As a result of the Arrangement, Gold Hart beneficially owns, or exercises control and direction over 107,185,253 Rhyolite Shares, representing 100% of the issued and outstanding Rhyolite Shares. An early warning report will be filed in accordance with applicable securities laws and will be available on Gold Hart's SEDAR+ profile at www.sedarplus.ca.

To obtain a copy of the early warning report, please contact Gold Hart's contact person named below Gold Hart's head office is located at 3400 One First Canadian Place, Toronto, Ontario M5X 1A4. About RYE RYE was incorporated under the Business Corporations Act (Alberta). RYE's principal business activities include the acquisition, exploration, and development of mineral properties.

RYE is headquartered in Vancouver, British Columbia. On behalf of the Board of RYE, and for further information, please contact: Rhyolite Resources Ltd., Richard Graham, Chief Executive Officer and Director Email: graham@earlston.ca ; Tel: 604-488-5427. About Gold Hart Copper's Nessa Gold-Copper-Silver Assets Gold Hart's Nessa properties sit on the renowned Domeyko Fault of Chile, most famous for hosting the Escondida Copper Mine - now the largest copper mine in the world - which was first staked by Gold Hart co-founder Dr. Jose Frutos in the 1970s.

Dr. Frutos recognized and personally staked some of the Nessa claims nearly two decades ago, due to the unique surface alteration - visible from satellite imagery - with high grades on surface and several historic mines which exploited gold, copper and silver at or near surface via pits and shallow tunnels. The historic mines coincide with a pervasive yet intense hydrothermal alteration (silicic-argillic to quartz-sericitic with abundant kaolin in the central part) with a halo of propilitic alteration in the periphery, with disseminated gold-copper-silver mineralization throughout. Gold Hart recently expanded the Nessa property by 330% (3.3X) from an initial property size of 4,100Ha up to a current land position of 13,500Ha (135km 2 ).

The Nessa Complex is just south of the massive Codelco El Salvador - Portrerillos copper mining and smelting complex, one of the oldest copper smelting facilities in the country. Nessa is also surrounded by major miners Newmont, Solaris, JX Nippon, and Anglo American, and sits just northwest of Rio2's Fenix gold deposit and just west of Kinross' La Coipa gold mine. The Nessa properties were known to host 13 historic artisanal high-grade gold & copper pits, which were mined using mules due to lack of access.

Additionally, historic geochemical surveys discovered high grades on surface for gold, copper, and silver, with samples up to 25g/t gold, 3.25% copper, 958g/t silver. However, the Company has now discovered additional copper showings on surface and historic mining pits, and now believes there may be other unknown targets on these assets. Gold Hart completed a preliminary geochemical survey and obtained additional high grade samples, including up to 9.7g/t gold, 968g/t silver, and 4.7% copper on surface, and today announced completion of the first-ever comprehensive geochemical survey with 750 samples collected by HART geologists.

Please refer to the notes regarding quality assurance and quality control measures applied during the execution of the work being reported on, at the end of this disclosure. Please visit the Gold Hart Copper YouTube channel for footage of the road construction and copper oxides at Ness a: https://www.youtube.com/shorts/Ax6fOStX72c . About Gold Hart Copper's Tolita Gold-Copper-Molybdenum-Silver Target The Tolita property is a historically significant gold-copper asset which was first recognized and staked in 1993 - by one of the pioneering geologists of the Maricunga-Vicuña district - for its uniquely high grades of gold and copper on surface 3 .

Geochemical surveys revealed gold, copper, silver, and molybdenum anomalies, which led to trenching. Tolita has had significant trenching (5,600m / 5.6km) with the highest grade trench returning grades up to 52g/t gold equivalent including 4% copper. Tolita has undergone helicopter mag surveys which identified 4 unique anomalies as well 3 .

In 1996, a third party company optioned the property and drilled 3 short 200m RC holes, without any geophysics, and yet still hit gold and copper in all 3 holes, including long intercepts of gold and copper (150m and 164m, respectively) close to surface in 2 of the 3 holes. At the time, gold was approximately $300/oz and copper traded below $1.00/lb, and large scale sulphide porphyry deposits with both gold and copper were often considered less favorable than smaller scale gold-only oxide deposits. As a result, and due to general market sentiment for junior exploration companies in 1997-1998, Tolita was only drilled to a depth of 200m with 3 short RC holes (out of a planned 8 hole campaign) 3 .

When Gold Hart acquired the property, a full geophysical survey was conducted by a recognized geophysics firm, and a large high-chargeability and conductive anomaly was discovered that is near surface and almost 2.5km 2 in size (recently expanded to 4.5km 2 ) and "interpreted as a copper-gold or gold-copper porphyry system that certainly warrants additional exploration and drilling 4 ". Gold Hart Copper has therefore launched diamond drilling and is fully funded for this planned campaign. In the spring of 2025, the Company completed two holes of approximately 600m each, confirming that Tolita indeed hosts a fertile porphyry system.

Gold Hart geologists observed early stage veining near surface, providing the first clear evidence of a porphyry related system within zones of moderate chargeability. The mineral intercepts occur within a multi-generation stockwork vein system hosted by a series of multi-phase porphyry intrusions. Multiple alteration types have been identified, overprinting the original potassic alteration of the porphyry system.

At greater depth, the potassic alteration becomes increasingly dominant, accompanied by more intense and continuous veining across locally moderate to stronger chargeability amplitudes. The newly acquired geophysical data indicates that the system may even extend several hundred meters further at depth. Effectively, the Company, and various visiting geologists have all concluded the presence of a porphyry, and Gold Hart is now focused on exploration to find the richer grades and potential limits of the system.

Please visit the Gold Hart Copper YouTube channel for footage regarding the mobilization and drill pad expansion: https://www.youtube.com/shorts/M5ovBFOgQTU Gold Hart recently hosted a site visit which included tours of the Tolita & Nessa assets. Gold Hart board and advisory board members including the honourable John R. Baird, Mark Kucher, and Aleta Shiff were also in attendance. In this 360-degree immersive video - which allows you to interactively toggle views - Gold Hart co-founder Jonathan Warner explains the diamond drilling process https://cloud-va.insta360.com/share/va/374Q7q0e1K66213G4421719040 also accessible on YouTube at https://www.youtube.com/shorts/lw3fGWwQH2Q About Gold Hart Copper Gold Hart Copper is one of the largest independent land owners surrounding major miners where the famous Maricunga Gold Belt meets the emerging Vicuña Copper Belt in Chile.

HART is actively acquiring, exploring and developing its portfolio of gold, copper & silver properties adjacent to the largest gold and copper assets on the continent. HART has rolled-up a portfolio of historically significant assets surrounding majors, in some cases personally staked by the very same geologists who made the adjacent mega-discoveries, since the early 1990s. Some of the Gold Hart properties have already undergone a first phase of drilling, with highly encouraging results of gold, copper, silver, and molybdenum.

Gold Hart properties are controlled 100% and not subject to any royalties whatsoever. HART believes it may be sitting on one of the only fully-preserved untested large-scale gold-copper-silver porphyry targets in the Vicuña District - an asset that was first recognized for its uniquely high grades of gold and copper on surface - and staked by one of the Maricunga-Vicuña district's pioneering geologists 3 in 1993. Gold Hart Copper is fully funded for its planned drill campaign.

HART's team of geologists were personally involved in pioneering exploration in the region, leading to some of its greatest gold, copper, and silver deposits, and include the country's former Geological Survey National Deputy Manager Dr. Professor José Frutos. Specifically, senior Gold Hart geologists were personally involved in the Escondida copper discovery, now the largest copper mine in the world 5 controlled by Rio Tinto and BHP, as well as Norte Abierto / Cerro Casale, the largest gold-copper discovery in Chile 2 acquired by Barrick and Newmont (GoldCorp) with reserves and resources of 50.6-million ounces of gold (0.53g/t), 13.4-billion pounds of copper (0.20%) and 218-million ounces of silver (2.3g/t). In addition to its large land position in the Vicuña District, Gold Hart recently acquired the Nessa properties just northwest on Chile's Paleocene-Eocene Belt on the famous Domeyko Fault System, which is home to some of Chile's largest gold, copper, and silver assets including Escondida, Chuquicamata and Collahuasi.

The Nessa properties host several historic gold and copper artisanal mines with high grades of gold, copper, and silver on surface, with a large alteration and magnetic anomaly extending approximately 6km. Kinross' La Coipa Gold Mine sits just east of Nessa. HART | Gold Hart Copper Corporation - Social Media Channels Website: https://goldhartcopper.com LinkedIn: https://www.linkedin.com/company/goldhartcopper X / Twitter: https://x.com/goldhartcopper Youtube: https://www.youtube.com/@goldhartcopper Instagram: https://www.instagram.com/goldhartcopper Qualified Person The technical information contained in this news release related has been reviewed and approved by Mr. Jonathan A. Warner, Executive Vice President of Gold Hart Copper and a Qualified Person within the meaning of NI 43-101.

For further information please contact: Gold Hart Copper Corp. Isaac B. Maresky Chief Executive Officer and Director Email: im@goldhartmining.com Notes on quality assurance and control regarding geochemical survey published (i) Hermetic sealed individual bags for every sample (ii) Unique sample ID for tracking (iii) Coordinate location and picture of outcrop (iv) Basic geology notes on control points with samples (v) Consistent sample size between 2-3kg (vi) Certified lab conducting assays. Gold Hart utilized AAA Labs in Chile to conduct the assays, an independent laboratory with no relationship to Gold Hart. References & Notes: The Historic Mineral Resource noted above are historical estimates and a qualified person has not done sufficient work on behalf of Gold Hart to classify the historical estimate as current mineral resources or mineral reserves and Gold Hart is not treating the historical estimate as current mineral resources or mineral reserves.

Gold Hart has not conducted its own analysis and intends to allocate a team of geologists in order to undertake a thorough review of the area covered by the Application. In order to upgrade or verify the Historic Mineral Resource as current mineral resources or mineral reserves, the Company would have to review all project data, validate data quality, create a new geological model and then make an updated resource estimate. The Historical Mineral Resource utilized categories materially different from standard mineral resources and mineral reserves; Current metal prices utilized (Gold $4,716/oz, Silver $80.32/oz, Copper $6.09/lb) Norte Abierto is considered the largest undeveloped gold asset in Chile as defined by hosting the largest number of total gold ounces.

Numbers sourced directly from property owner's website and public filings. Please refer to the Company's NI 43-101 Technical Report on Sedar for information pertaining to Gold Hart Copper's properties including historical exploration at Tolita, including but not limited to, the history of the asset and its original staking, geochemical surveys, trenching surveys, helicopter magnetic surveys, and historical RC drilling. Geophysical survey is summarized in the Company's NI 43-101 Technical report available on Sedar.

Such geophysical surveys are not definitive, and the results are still at an early stage of interpretation, with no guarantee of a mineral discovery. Escondida is the largest copper mine globally, as defined by producing the greatest number of copper tonnes per annum. Numbers sourced directly from property owner's website and public filings.

Cautionary Statement on Forward-Looking Information This news release contains forward-looking statements and information that are based on the beliefs of management and reflect RYE and HART's current expectations. When used in this news release, the words "estimate", "project", "belief", "anticipate", "intend", "expect", "plan", "predict", "may" or "should" and the negative of these words or such variations thereon or comparable terminology are intended to identify forward-looking statements and information. The forward-looking statements and information in this news release include information relating to the Arrangement and the business and prospects of HART, RYE, and the combined company.

By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. The combined company may require additional financing in order to continue its operations. Financing may not be available when needed or on terms and conditions acceptable to the combined company.

New laws or regulations could adversely affect the combined company's business and results of operations. Stock and commodities markets have recently experienced significant volatility; these fluctuations may adversely affect the price of the securities of HART, RYE and the combined company, regardless of operating performance. There are a number of important factors that could cause HART, RYE and the combined company's actual results to differ materially from those indicated or implied by forward-looking statements and information.

Such factors include, among others: commodity price, share price and currency fluctuations; negative operating cash flow; exploration, development and other cost overruns; and general market and industry conditions. HART and RYE caution that the foregoing list of material factors is not exhaustive. When relying on HART and RYE's forward-looking statements and information to make decisions, investors and others should carefully consider the foregoing factors and other uncertainties and potential events, including those risk factors identified in HART and RYE's respective public filings.

The forward-looking information contained in this news release represents the expectations of HART and RYE as of the date hereof and, accordingly, is subject to change after such date. Readers should not place undue reliance on forward-looking information and should not rely upon this information as of any other date. HART and RYE expressly disclaim any obligation to update this information except as required by applicable law.

The TSX Venture Exchange has in no way passed upon the merits of the Arrangement and has neither approved nor disapproved the contents of this news release. Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/303714 Newsfile Corp. July 2, 2026 - 4:48 AM PDT News by QuoteMedia www.quotemedia.com