Investor Presentation

Technical Report ⑆CORSA RS TSX-V: CSO | OTCQX: CRSXF The mineral reserve and resource estimates relating to Corsa's properties, which are effective as of December 31, 2023, have been prepared by Marshall Miller & Associates, Inc. ("MM&A") under the supervision of Justin S. Douthat, P.E., M.B.A., John W. Eckman, C.P.G. and Scott Peterson, C.P.G., each a qualified person ("QP"), as such term is defined in National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43- 101"). MM&A is independent of Corsa and its subsidiaries. For a complete description of the mines and projects relating to the NAPP Division Properties, see the report prepared pursuant to NI 43-101 by MM&A under Corsa's profile at www.sedarplus.ca entitled "Technical Report on the Coal Resource and Coal Reserve Controlled by Corsa Coal Corp., Pennsylvania and Maryland, USA - Prepared in Accordance with National Instrument 43-101 Standards for Disclosure for Mineral Projects Effective December 31, 2023" (the "NAPP Technical Report"). Reserves are clean recoverable tons. Cautionary Statement Regarding Estimates of Mineral Reserves This document sets forth certain estimates of “reserves" and "resources". While Corsa believes that the estimates were based on methodologies acceptable in Canada pursuant to NI 43-101, such estimates are not synonymous with the United States Securities and Exchange Commission ("SEC") Regulation S-K 1300 for Mining Property Disclosure ("S-K 1300"). NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards for all public disclosure an issuer makes in Canada of scientific and technical information concerning mineral projects. Of note to U.S. investors, these standards now more closely align with the requirements of the SEC (including under S-K 1300). Under U.S. standards, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. U.S. investors are cautioned not to assume that all or any part of historical estimates of "resources" in this presentation will ever be converted into reserves, or if converted, what actual tonnage and grade they may have. Accordingly, information concerning descriptions or mineralization, "resources" and "reserves" contained in this AIF are not comparable to information made public by U.S. companies subject to the reporting and disclosure requirements of the SEC. 13

View entire presentation