Osino Resources Corp. announced an increased mineral resource for its Twin Hills Gold Project in the Erongo Region of Namibia. The mineral resource was estimated from approximately 212,184m of diamond core (DD) and reverse circulation (RC) drilling.

Drill collars were generally spaced at 35m x 35m on surface and inclined at 60°, resulting in an effective data spacing of 35m laterally and 30m on section lines. A specific area of the Twin Hills Central resource, measuring 100m along strike and 50m across strike, was drilled at a closer spacing of 12.5m x 12.5m. This drilling was done as an orientation study to investigate the short-range variability of the deposit and possible implications on future grade control drilling configurations.

In addition, the drilling provided insight into requirements for upgrading Indicated mineral resources to Measured. A total of 212,184m of drilling from 1,016 holes (125,722m of diamond core from 451 holes and 86,462m of RC drilling from 565 holes) has been completed towards completing a resource estimate at Twin Hills since 2019. DD holes range from 63m to 555m in depth, while RC holes range from 40m to 260m in depth.

The average drilled depth for DD and RC holes is 279m and 153m, respectively. DD holes generally targeted deeper mineralization while RC holes targeted shallower mineralization due to drilling depth constraints. Most of the drillholes were oriented at 160° azimuth and 60° dip, except at Oryx and Kudu where the holes were drilled at 340° azimuth due to a structural change which models the mineralization to dip in the opposite direction in this area.

Both the DD and RC holes were sampled at one-meter intervals at the Osino core-yard in Omaruru and the drill rigs respectively. A sub-sampling process using a riffle splitter was used at the RC drill rig to reduce sample mass. This process was observed in the field by the responsible qualified person (QP) in accordance with NationalInstrument43-101 (“NI43-101”) requirements and was deemed to be a reasonable and robust method for reducing sample mass whilst producing a representative sub-sample.

Sulfide-hosted gold mineralization was interpreted and modelled from a combination of structural and assay data for each of the Twin Hills mineralization domains. The primary mineralization, hosted in meta-greywacke, generally dips between 60° and 80° towards the northwest and ranges from a few meters to 200m in thickness. The modelled mineralization includes mineralized intersections, with the geometry guided by local structural trends.

A 0.4 g/t Au threshold was used to model the mineralized volumes however a 0.3 g/t Au threshold was used for Twin Hills North for continuity purposes. Most modelled mineralization is overlain by a barren calcrete layer. The cross sections indicated below depict the mineralization at Bulge, THC and Clouds and they are oriented to align with the plane of the closest-spaced drilling.

The sections clearly illustrate the geometry and orientation of the mineralization. Gold grade was estimated using localized uniform conditioning (LUC) at Bulge, Twin Hills Central and Clouds from 2m composites into 60m x 60m x 5m (XYZ) panels and 5m x 5m x 5m selective mining units (SMU). Ordinary kriging was used for grade estimation at Clouds West, Twin Hills North, Kudu and Oryx.

Bulk density was determined using an Archimedes-type technique on core and assigned to the model based on oxidation/weathering and lithology, such that calcrete was assigned a density of 2.25 t/m3, oxide 2.57 t/m3, transitional material 2.66 t/m3 and fresh rock 2.76 t/m3. All assay data was verified by means of a rigorous QA/QC program which included the insertion of certified reference materials, blanks, and duplicates into sample batches sent for sample preparation and analysis. The results of the QAQC program were constantly monitored by both Osino personnel and the QP.

Diamond drill core and reverse circulation samples were dispatched to the Actlabs sample preparation facility in Windhoek. The QP visited this facility and reviewed the receipt of samples and their processing from crushing to milling and packaging. The packaged pulp samples are sent to Actlabs laboratories in either Canada, Colombia or Mexico, depending on available capacity.

Use of the geological data for mineral resource estimation and reporting is approved by the QP.