Mr. Christian Kargl-Simard of Adventus Mining reports

EL DOMO - CURIPAMBA PROJECT IS GRANTED THE ENVIRONMENTAL LICENSE FOR CONSTRUCTION AND OPERATION

The Ministry of Environment, Water, and Energy Transition of the government of Ecuador (MAATE) has granted the environmental licence for the construction and operation of Adventus Mining Corp. and Salazar Resources Ltd.'s (collectively the participants) El Domo-Curipamba project.

Christian Kargl-Simard, president and chief executive officer of Adventus, commented: "The granting of the environmental licence is the culmination of 17 years of diligent effort starting with exploration in 2007 that led to the discovery of the El Domo deposit in 2008 and included the publication of the NI 43-101 compliant feasibility study in October, 2021. This environmental licence is a tremendous achievement for our team and stakeholders, who worked tirelessly to transparently advance the El Domo-Curipamba project. We look forward to building on this significant milestone."

Fredy Salazar, president and CEO of Salazar, commented: "On behalf of the Salazar team, I would like to take this opportunity to thank the many people who have been involved each step of the way from initial discovery to today's environmental licence. This approval will allow the construction and operation of El Domo, which will provide a new generation of opportunities for the people of central Ecuador."

The environmental licensing process began on Nov. 4, 2021, with the submittal of the environmental and social impact assessment (ESIA) and the environmental management plan (EMP). The 7,000-page ESIA and EMP comply with Ecuadorian legislation and international best practices which include physical, biotic, socioeconomic and cultural baselines, determination of areas of influence, analyses of environmental risks and social and environmental impacts, as well as a plan that comprises the prevention and mitigation of impacts, contingencies, training, waste management, community relations, rehabilitation of affected areas, wildlife rescue, environmental monitoring and mine closure.

MAATE issued the technical approval of the ESIA and EMP in May, 2022. The final phase of the permitting process, the environmental consultation, was carried out by MAATE between July and December, 2023, pursuant to the Regulation of the Environmental Organic Code as modified by Presidential Decree 754 and in accordance with guidelines issued by the Constitutional Court of Ecuador, which incorporate Escazu principles and other international standards related to community participation in development projects. The consultation was overwhelmingly supported by the communities in the direct area of influence of the project, with 98 per cent voting in favour of issuing the environmental licence -- see Dec. 27, 2023, news release.

With this important news, the participants confirm previous guidance on start of construction, and reaffirm their commitment to responsible, sustainable development in Ecuador through strict compliance with local legislation and adoption of international best practices. The participants strive for excellence in all aspects of their operations by putting responsible environmental stewardship, community participation and development, and technical excellence at the forefront of all endeavours.

About Adventus Mining Corp.

Adventus Mining is an Ecuador-focused copper-gold exploration and development company. Adventus Mining is majority owner of the 215-square-kilometre Curipamba copper-gold project, which has a completed feasibility study on the shallow and high-grade El Domo deposit. In addition, Adventus Mining is engaged in a countrywide exploration alliance in Ecuador, which has incorporated the Pijili and Santiago copper-gold porphyry projects to date. Outside of Ecuador, Adventus Mining owns an exploration project portfolio in Ireland with South32 Ltd. as the financing participant. Its strategic shareholders include Altius Minerals Corp., Greenstone Resources LP, Wheaton Precious Metals Corp. and significant Ecuadorian shareholders. Adventus Mining is based in Toronto, Canada, and is listed on the TSX Venture Exchange under the symbol ADZN and trades on the OTCQX under the symbol ADVZF.

About Salazar Resources Ltd.

Salazar Resources is focused on creating value and positive change through discovery, exploration and development in Ecuador. The team has an unrivalled understanding of the geology in-country and has played an integral role in the discovery of many of the major projects in Ecuador, including the two newest operating gold and copper mines. Salazar Resources has a wholly owned pipeline of copper-gold exploration projects across Ecuador with a strategy to make another commercial discovery and farm out non-core assets. The company actively engages with Ecuadorian communities and together with the Salazar family it co-founded The Salazar Foundation, an independent non-profit organization dedicated to sustainable progress through economic development. The company already has carried interests in three projects. At its maiden discovery, Curipamba, Salazar Resources has a 25-per-cent stake fully carried through to production. At two copper-gold porphyry projects, Pijili and Santiago, the company has a 20-per-cent stake fully carried through to a construction decision.

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