GR Silver Mining Ltd. announced drill results in the northern portion of the Plomosas Mine Area. These results represent intersections of polymetallic (Ag-Au-Pb-Zn) hydrothermal breccia near the surface in unmined areas in the historic Plomosas Mine Area at the Plomosas Silver Project in Sinaloa, Mexico. GR Silver Mining has completed over 16,000 m of surface and underground core drilling at the Plomosas Project since its acquisition in 2020. This represents a major advance for a development stage project which had been dormant for many years. Additionally, the Company's exploration team has completed structural and geological mapping surveys in both areas, revealing what the Company believes to be a district-scale Ag-Au rich epithermal system. The Company is planning the continuation of exploration and surface drilling along strike of the mineralized systems in both areas, aiming to discover extensions to the planned resource estimates in the coming months. The longitudinal section below represents the N-S trend of the Plomosas Mine Area, displaying the location of all surface and underground drill holes released to date and the upside potential for additional Ag-Au mineralization to be discovered along strike and down dip. Quality Assurance Program and Quality Control Procedures: The Company has implemented QA/QC procedures which include insertion of blank, duplicate and standard samples in all sample lots sent to SGS de México, S.A. de C.V laboratory facilities in Durango, Mexico, for sample preparation and assaying. For every sample with results above Ag >100 ppm (over limits), these samples are submitted directly by SGS de Mexico to SGS Canada Inc. at Burnaby, BC. The analytical methods are 4-acid Digest and Inductively Coupled Plasma Optical Emission Spectrometry with Lead Fusion Fire Assay with gravimetric finish for silver above over limits. For gold assays the analytical methods are Lead Fusion and Atomic Absorption Spectrometry Lead Fusion Fire Assay and gravimetric finish for gold above over limits. The recent drill holes, completed by First Majestic from 2016 to 2018, followed QA/QC protocols reviewed and validated by GR Silver Mining, including insertion of blank and standard samples in all sample lots sent to First Majestic's Laboratorio Central facilities in La Parilla, Durango, for sample preparation and assaying. Additional validation and check assays were performed by an independent laboratory at SGS de México, S.A. de C.V. facilities in Durango, Mexico. The analytical methods applied for these recent holes for Ag and Au assays comprised of Fire Assay with Atomic Absorption finish for samples above Au >10ppm and Ag >300ppm and Gravimetric Finish. Lead and Zn were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry. GR Silver Mining has not received information related to the Grupo Mexico QA/QC and assay protocols and at this stage is considering the information historic for news release purposes.