GCM Mining Corp. (TSX: GCM) (OTCQX: TPRFF) announced today that it has filed a technical report and preliminary economic assessment  pursuant to National Instrument 43‐101 – Standards of Disclosure for Mineral Projects  for its Toroparu Gold Project located in the Upper Puruni River Region of Western Guyana. The Technical Report dated January 11, 2022, with an effective date of December 1, 2021, supports the disclosure made by the Company in its December 1, 2021 news release and was prepared by Nordmin Engineering Ltd. The Technical Report is based on the updated Mineral Resource estimate for the Toroparu Gold Project with an effective date of November 1, 2021.

About GCM Mining Corp.

GCM Mining Corp. is a mid-tier gold producer with a proven track record of mine building and operating in Latin America. In Colombia, the Company is currently the largest underground gold and silver producer with several mines in operation at its high-grade Segovia Operations. In Guyana, the Company is advancing the Toroparu Project, one of the largest undeveloped gold/copper projects in the Americas. The Company also owns an approximately 44% equity interest in Aris Gold Corporation (TSX: ARIS) (Colombia – Marmato), an approximately 27% equity interest in Denarius Silver Corp. (TSX-V: DSLV) (Spain – Lomero-Poyatos; Colombia – Guia Antigua and Zancudo) and an approximately 26% equity interest in Western Atlas Resources Inc. (TSX-V: WA) (Nunavut – Meadowbank).