Reunion Gold Corporation announced an updated Mineral Resource Estimate (?MRE? or ?Resource?) at the Kairuni zone on its 100%-owned Oko West Project in Guyana. The updated Resource shows a significant increase in both grades and contained gold within the overall MRE, which also includes a substantial initial underground Resource The total combined open pit and underground Resource reported in this MRE includes 4.3 million ounces (M oz) of gold (Au) in Indicated Resources contained within 64.6 million tonnes (Mt) grading 2.05 grams per tonne (g/t) Au, with an additional 1.6 M oz of gold in Inferred Resources, contained within 19.2 Mt grading 2.59 g/t Au.

The MRE was prepared by G Mining Services Inc. with an effective date of February 7, 2024. This MRE update includes an initial constrained underground Resource for Oko West of 1.1 M ounces of gold in the Inferred Resource category, contained within 11.1 Mt at a grade of 3.12 g/t Au and an additional 29,000 ounces of gold in the Indicated category. The underground Resource was calculated using a cut-off grade of 1.38 g/t Au undiluted and is contained in five zones.

The bulk of the ounces are located in the Central underground zone, which represents the extension of the high-grade zone in Block 4 at depth, below the limits of the open pit MRE. The underground Resources are estimated from zones outside the constrained Resources of the open pit. Both the Central zone and the South zone mineralization remains open to expansion at depth.

A drill program is currently underway to convert gold ounces contained within the Inferred category of the underground MRE to the Indicated category. The updated open pit constrained MRE by weathering category. The open pit Resource was calculated to a depth of approximately 640 m (about 55 m below the pit bottom used in the previous resource calculation ?

Initial MRE, June 2023) and is comprised of 4.2 million ounces of gold in the Indicated category contained within 64.1 million tonnes grading 2.06 g/t Au, plus an additional 488,000 ounces of gold in the Inferred category contained within 8.1 Mt grading 1.87 g/t. This represents a 71.2 % increase in the Indicated pit constrained resource from the initial MRE with an 11.7 % increase in grade. The increase in the pit constrained indicated ounces and grades reflects the trend towards increasing grades at depth in the Block 4 area of the Kairuni zone. The reduction in inferred ounces from the June 2023 MRE reflects the high rate of conversion to an Indicated category resulting from the infill drilling program.

Approximately 90 % of the total open pit Resources have now been converted to the Indicated category, with most of the remaining inferred ounces located within Blocks 5 and 6. Over 500,000 ounces of the Indicated open pit Resource is contained in the saprolite and transitional material. This material will provide ?free digging? and relatively soft feed that can be sent to the mill early in the mine life, providing potential for higher levels of gold output with commensurately lower costs, and providing the potential for a rapid payback period.

gold ounces per vertical meter and average grade per 30-meter depth slices of the mineral resource. It shows that the vast majority of ounces in the open pit are in the Indicated category. In addition, at the pit floor, when underground stopes begin, there is a significant increase in grade associated with the mining method.

A total of 565 drill holes totalling 144,134.6 meters were included in the calculation of this MRE, comprised of 125,705.6 meters in 393 diamond drill holes and 18,429 meters in 172 reverse circulation (RC) drill holes. A total of 57 trenches totalling 6,538.5 meters were also included in the calculation. The updated Resource is based on approximately 60,700 meters of additional drilling from 134 diamond drill holes and 10 RC holes completed on Blocks 1 through 6. include a gold price of $US 1,950 per ounce and a varying cut-off grade depending on weathering profile (0.30 g/t Au for saprolite and alluvium/colluvium, 0.31 g/t Au for transition, and 0.37 g/t Au for fresh rock).

A cut-off grade of 1.38 g/t Au was used to calculate the underground MRE. Drilling at the project is continuing with five diamond drill rigs focused on resource conversion and exploration in and around Blocks 1 - 6, as well as one diamond drill rig and two RC rigs that continue exploration drilling south of the MRE and in other areas of the project. The drill programs on Blocks 1 through 6 are focused on 1) expansion of the MRE both to the south and at depth, and 2) upgrading the underground Inferred Resource to the Indicated category, whilst the exploration drilling is focused on the potential for satellite deposits at Oko West outside of the MRE.

The above drill program is expected to be approximately 30,000 meters of diamond drilling, of which approximately 20,000 meters will be allocated to converting the underground Inferred Resources to Indicated. In addition, the Company has commenced a geotechnical drilling program in areas designated for possible tailings and waste rock storage facility locations. Outside of the Oko West project, the Company intends to make use of its substantial knowledge, expertise and local connections within the mining and exploration community in the Guiana Shield to identify, acquire and explore new exploration projects, both around Oko West and elsewhere within Guyana and Suriname.

The drilling database used to estimate the Mineral Resources reported in this press release was reviewed by G Mining Services Inc. A site visit was conducted by Pascal Delisle, P. Geo, to inspect mineralized intervals, alteration assemblages and QA/QC protocols and to conduct field checks of trenches and to validate drill collars. Database verifications consisted of drill logs (including lithology, alteration, weathering), assay certificates, sample intervals, drill hole collars, downhole survey information and QA/QC results validations. The Company intends to file a technical report to support the updated MRE on sedarplus.ca within 45 days of this news release in accordance with National Instrument 43-101 - Standards of Disclosure of Mineral Projects (?NI 43-101?).

Pascal Delisle, P.Geo. of G Mining Services Inc., is an independent ?qualified person? under NI 43-101 and responsible for the MRE.

Mr. Delisle has reviewed and approved the scientific and technical information related to the MRE contained in this news release. Justin van der Toorn, CGeol FGS, EurGeol, the Company?s Vice President Exploration and a ?qualified person? under NI 43-101, has also reviewed and approved the scientific and technical information contained in this news release.