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One Bullion Ltd Reports Gravity-Finish Assay Results At Vumba Project and Receives Eia Approval for Maitengwe Project
One Bullion Ltd. reported two portfolio advancement milestones: (i) receipt of gravity-finish re-assay results (ALS method Au-GRA21) for five samples from the Company’s recently completed geological mapping and sampling program at the Vumba Project, previously reported on April 27, 2026, and (ii) receipt of Environmental Impact Statement (EIS) approval from Botswana’s Department of Environmental Protection (DEP) for the Maitengwe Exploration Project (Prospecting License PL 012/2018), valid for two (2) years from April 20, 2026. Gravity-finish (Au-GRA21) assay results received for five (5) samples previously reported as >10 g/t Au by fire assay at the Vumba Project, as initially disclosed in the Company’s news release dated April 27, 2026. Top result of 30.8 g/t Au returned by sample Z4608 (Smokey Quartz Vein, Artisanal Pit). Four of five samples confirm high-grade gold above 10 g/t Au on gravity-finish re-assay: Z4608 (30.8 g/t), Z4632 (22.2 g/t), Z4620 (17.55 g/t), and Z4639 (11.0 g/t). Results span multiple artisanal workings and lithological hosts across approximately 2.5 km of north-south strike at the Vumba License. As reported on April 27, 2026, One Bullion completed a targeted geological mapping and sampling program across seven identified artisanal workings within the Vumba Project, collecting a total of 39 rock samples. Five samples initially returned results greater than 10 g/t Au by fire assay with atomic absorption finish (Au-AA30), exceeding the reporting threshold of that method. In accordance with standard practice, these five samples were submitted to ALS Geochemistry (Johannesburg, South Africa) for additional analysis using the gravity-finish method (Au-GRA21). The Company is now reporting the quantified gravity-finish assay results for all five samples. Sample ID Easting (mE) Northing (mN) Elev. (m) Lithology Sample Type Au FA (g/t)* Au GRA21 (g/t) Z4608 535,294 7,711,735 1,162 Smokey Quartz Vein Artisanal Pit >10 30.8 Z4620 535,751 7,712,487 1,185 Smokey Quartz Vein Artisanal Stockpile >10 17.55 Z4628 535,755 7,712,608 1,206 Amphibolite Schist Artisanal Dumps >10 8.48 Z4632 535,517 7,714,369 1,250 Banded Talc Schist Artisanal Stockpile >10 22.2 Z4639 536,576 7,711,525 1,224 Smokey Quartz Vein Artisanal Pit >10 11.0. The Company’s interpretation that gold mineralization at Vumba is structurally controlled and associated with quartz veining hosted within the broader greenstone belt, consistent with orogenic gold systems known to host significant gold deposits globally. The quantified results, spanning multiple artisanal workings and lithologic hosts, including smokey quartz veins, amphibolite schist, and banded talc schist, across approximately 2.5 km of north-south strike reinforce the presence of an emerging high-grade mineralized corridor at the Vumba License. The spatial distribution of high-grade values across contrasting host rock types is consistent with a mineralizing system warranting follow-up evaluation through the Company’s planned geophysical survey and subsequent drill program. Rock samples were collected in the field by Company personnel and transported under chain-of-custody protocols to ALS Laboratories, an independent certified analytical laboratory. Sample preparation and analysis has been conducted using industry-standard procedures. Analytical testing was performed by ALS Geochemistry (Johannesburg, South Africa); the facility is ISO/IEC 17025:2017 accredited and ISO 9001:2015 Certified. The entire sample is crushed to 70% passing 2 mm mesh, with a 250-gram split pulverized to 85% passing minus 75 microns. A four-acid digest is performed on 0.4 g of sample to quantitatively dissolve most geological materials, tested using ICP-AES technique. An initial fire assay analysis is performed on 30 grams of sample with an atomic absorption finish (Au-AA30). For samples that returned results greater than 10 g/t Au by this method, an additional analysis was performed using ALS method Au-GRA21, in which 30 grams of sample material is fire assayed with a gravity finish, reporting quantitative results up to 10,000 g/t Au. All samples disclosed herein were selective grab samples collected from historic artisanal dumps, stockpiles, and pits. Grab samples are selective by nature and are not necessarily representative of the overall grade or tenor of mineralization on the property.