HART.V · 2025-10-21 12:00:00

Gold Hart Copper Launches New Geophysics Survey on Flagship Tolita Gold- Copper-Molybdenum- Silver Asset in Vicuña Chile

Exploration Programs

Gold Hart Copper Launches

New Geophysics Survey

on Flagship Tolita Gold-

Copper-Molybdenum-

Silver Asset in Vicuña Chile

October 21, 2025 7:48 AM EDT | Source: Gold Hart Copper Corp.

Also Announces Discovery of Additional Copper Showings on Surface & Historic Mining Pits at

Nessa Properties West of Kinross' La Coipa & Construction of New Roads; Announces

Completion of Drill Pad Expansion at Tolita to Accommodate Larger Drill Rig; Provides Update

on Tolita Drilling Start Date

Toronto, Ontario--(Newsfile Corp. - October 21, 2025) - Gold Hart Copper Corp. (TSXV: HART)

(the "Company", "Gold Hart", or "HART") is pleased to announce the launch of a new

geophysical survey at the Company's flagship Tolita gold copper molybdenum silver asset in the

emerging Vicuña Copper-Gold District of Chile. The Company has also begun construction of new

roads at the Nessa properties along the Domeyko Fault, encountering new showings of visible

copper minerals at surface with additional historic mining pits. Gold Hart has also completed drill-

pad expansion at the Tolita property.

New Geophysical Survey at Flagship Tolita Gold-Copper-Molybdenum-Silver Asset in Vicuña

Distrcit

Gold Hart elected to proceed with a new (second) geophysical survey at the Company's flagship

Tolita asset. Specifically, the Company proceeded with additional geophysics in order to:

1. Survey depth beyond the current anomaly to test whether the existing anomaly continues

deeper

2. Survey north of the existing anomaly to determine whether it extends in that direction

3. Survey certain additional IP lines to test working theories of Tolita's potential direction and

faulting

The geophysical survey is being conducted by a highly experienced geophysics firm with

experience on hundreds of successful geophysical surveys in Chile including Caserones (Lundin),

Escondida (BHP & Rio Tinto), El Morro (Teck & Newmont), Cerro Casale (Barrick & Newmont),

Chuquicamata (Codelco), Maricunga (Kinross), Volcan (Hochschild & Tiernan), La Coipa

(Kinross), Esperanza, and Valeriano (Atex).

As previously reported, the initial geophysical survey at Tolita (2022) conducted by the same firm,

totaled approximately 14km. Gold Hart hopes to add an additional 5-10km with the new

geophysical survey. The Company hopes to be in a position to report on the findings of this new

survey in the coming weeks.

Construction of New Roads at Nessa Properties West of Kinross' La Coipa on Domeyko Fault

Gold Hart has commenced construction of kilometers of new roads to access the Company's

recently acquired Nessa properties (Nessa, Pingo, and Manto Carolina) which are located just

west of Kinross' La Copia Gold Mine. These 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

also personally staked certain Nessa property claims decades ago, before vending the properties

into Gold Hart.

The Company believes that the construction of new roads will immediately add value to the

properties in an accretive manner, because lack of access prevented these historic assets from

receiving the exploration & development they clearly deserve.

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. Please visit the Gold Hart Copper YouTube channel for footage of the

road construction at Nessa: https://www.youtube.com/shorts/hwV-FMEOouo

Discovery of Copper at Surface & Additional Historic Mining Pits at Nessa

While constructing the new roads at the Nessa assets (Nessa, Pingo, Manto Carolina), Gold Hart

discovered additional historic mining pits with visible copper minerals on surface, including

malachite and chrysocolla. These pits and copper showings were not known to the Company nor

were they included in any prior documentation regarding the assets.

Upon completion of the new roads, the Company intends to utilize the bulldozer to open-up areas

of interest within the Nessa properties. Thereafter, Gold Hart will be positioned to commence

additional geochemical and other surveys. The Company hopes to be in a position to report

further on these initiative in the coming weeks.

As prior reported, the Nessa properties were recognized and personally staked by Gold Hart co-

founder Dr. Frutos 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.

Please visit the Gold Hart Copper YouTube channel for footage of the new copper pits & showings

at Nessa: https://www.youtube.com/shorts/Ax6fOStX72c

Tolita Drill Pad Expansion & Update on Drilling Start Date

The Company also wishes to announce that it has completed expansion of the drill pad at the

Company's flagship Tolita property, in order to accommodate the larger diamond drill rig.

In addition to the drill pad expansion, certain minor repairs to the drill camp housing Gold Hart's

drillers, were required and are nearly completed. As a result, the new projected start date for the

third phase of drilling at Tolita, is October 24, 2025 to October 27, 2025.

Please visit the Gold Hart Copper YouTube channel for footage regarding the mobilization and drill

pad expansion: https://www.youtube.com/shorts/M5ovBFOgQTU

Oct 21 2025 - New Geophysical Survey - Surface Copper - Road Construction