Kalo Gold uses detectORE screening at Vatu Aurum

Mr. Terry Tucker reports KALO GOLD ENHANCES DRILL TARGETING AT VATU AURUM WITH RAPID DETECTORE GOLD SCREENING Kalo Gold Corp. has adopted the detectORE gold screening system, a field-based geochemical technology developed by Portable PPB Pty. Ltd., that is in routine use at the Vatu Aurum project, Fiji. Highlights: detectORE is in routine use at Vatu Aurum to provide rapid on-site gold screening of rock, trench, core and soil samples (reported as detectORE units (dU)). In an internal 2025 validation study of 824 Vatu Aurum samples, detectORE dU results showed strong linear correlation to certified fire assay gold results (Pearson correlation co-efficient (R) of 0.98 for total drill core samples; R equals 0.96 for trench samples). All detectORE screening data are tracked and quality assurance/quality control managed through Portable PPB's pLIMS system, including pXRF calibration verification, reference materials, blanks and duplicates, with batch review and reprocessing where required. Certified fire assay results remain the basis for reportable drill results under National Instrument 43-101. detectORE screening data may be disclosed as preliminary/supplementary information where clearly identified. "detectORE has materially improved our on-site workflow due to its linear correlation to certified fire assay gold results," stated Terry Tucker, PGeo, chief executive officer of Kalo Gold. "It allows our team to screen samples on site in real time and prioritize follow-up while certified laboratory assays are pending. The strong correlation we've observed in our internal validation work supports its use as a screening tool while certified fire assay remains the basis for all reportable drill disclosure." Smarter exploration with rapid gold data By deploying detectORE in the field, Kalo can update geological interpretations more rapidly, allowing for more dynamic and informed drill planning. This is particularly critical at Vatu Aurum, where diatreme-hosted and structurally controlled epithermal gold systems require rapid targeting adjustments. While detectORE is a semi-quantitative screening tool and not a substitute for laboratory assays, it provides the team with useful, rapid geochemical insight. Technical notes on detectORE gold screening results In addition to certified fire assay results, this release references gold values reported in detectORE units generated using the detectORE field-based gold analysis system. The company uses detectORE to provide rapid on-site screening at the Vatu Aurum project, enabling timely exploration decisions and target vectoring. A dU is a project-specific screening unit representing the leached and collected Au signal measured by the detectORE field procedure. dU values are reported on a part-per-billion-equivalent scale and reflect a semi-quantitative screening estimate. They are not a direct measure of total gold content. Gold values reported in dU are used for vectoring, prioritization and target refinement. The method uses the proprietary GLIX-20 reagent system to leach gold from fine-grained (pulverized or sieved) exploration samples, with handling, storage and disposal conducted in accordance with the applicable safety data sheets and required PPE. The leached gold is adsorbed onto a proprietary collector device and measured using a calibrated portable X-ray fluorescence analyzer (Evident Vanta, model V2MR). Kalo Gold analyzed 824 samples (751 drill core and 73 trenches), selected to cover a range of mineralization styles, gold values and sample conditions encountered at Vatu Aurum to compare dU results against certified fire assay. Results showed strong linear correlation (R equals Pearson correlation co-efficient): Total drill core (751 samples): R equals 0.98; Total trench samples (73 samples): R equals 0.96; Oxidized samples (364 samples): R equals 0.98; Fresh samples (unoxidized -- 348 samples): R equals 0.94. Analysis was performed on pulverized sample splits submitted to Australian Laboratory Services Pty. Ltd., a facility accredited by NATA to ISO/IEC 17025 for certified fire assay techniques, enabling direct comparison of dU results to certified fire assay values across a range of gold values and sample conditions (zero to 100 grams per tonne Au). Individual samples may show variance due to gold grain size, mineralogy, sulphide content or oxidation state. Soil dU results have not been directly validated against certified fire assay due to shipment/quarantine constraints. Interpretation is corroborated by comparisons established from drill core and trench data sets. Kalo Gold manages its on-site gold screening through a rigorous pLIMs (portable laboratory information management system) to ensure data integrity: Automated tracking: The system monitors sample mass, moisture content and pXRF calibration in real time. Verification tools: Workflows include the use of certified reference materials, blanks, duplicates and calibration collector devices. Accountability: All results are reviewed by batch. Any failure triggers an immediate investigation and sample reprocessing. dU results are not equivalent to certified fire assay results, and are not used to estimate mineral resources or mineral reserves. The detectORE process may not liberate or capture the total gold content present in the sample ahead of the pXRF reading. Certified fire assay results are used for all reportable drill results disclosed under National Instrument 43-101. Where certified fire assay results are available for the same sample/interval, the laboratory result is used for reporting. detectORE screening data may be disclosed as preliminary or supplementary information. Such results for recently completed drill holes are identified as certified fire assay results pending and will be updated when laboratory results are received. When both data sets are presented together, they are clearly differentiated by the dU unit designation. Qualified person The technical information relating to the detectORE 2025 validation and screening program disclosed herein was prepared by Lauren Reid, BSc (honours) geology, and has been reviewed and approved by Andrew Randell, PGeo, technical director, a qualified person as defined under NI 43-101. Mr. Randell has verified the disclosed information through multiple site visits (2023 to 2025) and review of field procedures and underlying data sets. About Kalo Gold Corp. Kalo Gold is a gold exploration company focused on epithermal gold systems at its 100-per-cent-owned, 367-square-kilometre Vatu Aurum project on Vanua Levu, Fiji. The project covers a regional back-arc basin with multiple volcanic calderas and numerous priority epithermal gold targets at various stages of evaluation. Continuing work is focused on systematic target development and drill planning across multiple mineralized trends. We seek Safe Harbor.