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Update on Status of Technical Reports for Its Mexican Projects

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Vancouver, British Columbia--(Newsfile Corp. - November 29, 2024) - Defiance Silver Corp. (TSXV: DEF) (FSE: D4E) (WKN: A1JQW5) ("Defiance" or the "Company") would like to provide an update on the preparation of the required technical reports for its Tepal and San Acacio projects (also see the Company's February 2nd and April 10th 2024 press releases for more details).

Tepal

As reported by the Company last April, the Company concluded that it was incapable of providing an amended report and that it would therefore prepare a new report on the project in compliance with National Instrument 43- 101 - Standards of Disclosure for Mineral Projects ("NI 43-101"). Defiance has been working with Micon International Limited, its technical advisors, to prepare a new technical report, including a new Mineral Resource Estimate ("MRE"), that will replace the previously filed technical report for its Tepal project.

Following the acquisition of ValOro Resources by Defiance at the beginning of January 2019 (see press release dated January 7, 2019), it was decided that more focus would be put on the development of the San Acacio project (which forms part of the Zacatecas complex) with management devoting less attention and resources to Tepal, working with the existing reports and results on the project. In June 2022, Defiance announced it had been the victim of an illegal and fraudulent transfer of the mineral concessions forming part of the Tepal project (see press release dated June 24, 2022). As such, the review of the Tepal project was further complicated by the Company's inability to access the project for two years due legal issues related to a number of illegally and fraudulently transferred concessions. This issue was finally resolved, through the Mexican courts, in favour of the Company as confirmed by its news release dated March 6, 2024.

Access has provided further information and insights into the nature and extent of the mineralization, allowed the Company to identify areas where further work could assist in infilling information in the current mineralized zones, expanding the mineralized zones or identifying new ones and identifying gaps in the database where further exploration programs could enhance and refine the information used as the basis of our new MRE.

The Company is however not in a position to amend the 2017 Preliminary Economic Assessment (the "2017 PEA") on the Tepal Project, principally because the Qualified Person ("QP") responsible for the metallurgical section of the 2017 PEA has retired, has been unavailable to exchange and collaborate with the Company and Micon on the results of his work, and Micon is not in position to replicate and sign-off on the metallurgical results obtained by the QP for the 2017 PEA. Therefore, this work will need to be redone.