Cascadero Copper Corporation announced the successful completion of its Preliminary Economic Assessment ("PEA") on its Taron Cesium Project ("Taron" or the "Project") located in Salta, Argentina. The PEA indicates that the drilled portion of the Taron property has a 23.85 Mt at a grade of 2,131 ppm Cesium. Using the Company's patented extraction process developed at the University of British Columbia and a Cesium Formate price of $50,000/t, the project has a 14+ years of mine life with a NPV(10) of USD 79 million, an IRR of 14% and a payback period of less than five years.

The PEA was completed by Wardell Armstrong International ("WAI"). In recognition of the opaque nature of the Cesium market, WAI conducted a resource sensitivity assessment at varying Cesium prices. An increase in Cesium Formate price of only 20% increases the NPV by almost four times (4X).

The PEA assessed the development of the Taron Project mineral resource by open pit mining, using the Company's patented High-Pressure Acid Leaching (HPAL) process to produce a final solution containing Cesium hydroxide to which formic acid is added for the production of an 80% Cesium Formate brine. Wardell Armstrong International (WAI) was retained by Cascadero to complete the PEA for the Taron Cesium Project located in the province of Salta, Argentina, and to prepare an independent Technical Report in accordance with the requirements of Canadian National Instrument 43-101 (NI 43-101) "Standards of Disclosure for Mineral Projects" of the Canadian Securities Administrators. The prime purpose of the PEA is to evaluate the economic viability of the Project and to establish an economic concept to justify further expenditure on this Project.

In addition, the report supports public disclosure of a PEA that is based on the Mineral Resource Estimate (MRE) dated 31 January 2024, as prepared by WAI. The NI 43-101 PEA Technical Report will be filed on SEDAR within 45 days of this announcement. Preliminary Economic Assessment Summary WAI recommends Cesium Formate brine be the assumed saleable product for the Taron PEA for the following reasons: Cesium Formate is the and most sustainable market for Cesium products; No confirmed active mining operations potentially creating long-term supply issues; and Tangible reasoning for anticipating an increase in product demand.

The Taron Property consists of five (5) Contiguous Mineral Tenures, approximating 8,179 hectares (83 Units) in area. The Tenures are registered to Cascadero Minerals S.A., which is 100% owned by Cascadero Minerals Corporation, a Canadian Company, which is 70% owned by Cascadero Copper Corporation and 30 % owned by Regberg Ltd. (RB). CMC operates as a 70% CCD and 30% RB joint venture.