GR Silver Mining Ltd. reported a new mineralized zone defined by drill results from the San Juan Area at its 100%-owned Plomosas Silver Project ("Plomosas Project") in Sinaloa, Mexico. The new zone called the "Yecora Vein" includes results from the 2020 drilling program as well as a reinterpretation of historical drill results in the same area. The results confirm the presence of wide and high-grade zones of silver, gold, lead and zinc mineralization, close to the surface in a new mineralized structure paralled to the San Juan Area. In addition to encountering attractive, near surface polymetallic (Ag-Au-Pb-Zn) mineralization at Yecora, gold-hosted veins have been identified indicating new opportunities for shallow drilling. The San Juan Trend now extends for at least 2 km along strike, consisting of at least six mapped veins: San Juan, La Colorada, Yecora, Loma Dorada, La Odisea and San Francisco. The progress of the exploration program at San Juan, which includes surface drilling and a review of geochemical and geophysical exploration data, in combination with detailed geological mapping, is expanding the extent of high-grade precious and base metal mineralization. This program has achieved the discovery of new mineralized structures close to the old San Juan mine workings at shallow depth. The Yecora Vein is located to the west of the San Juan Vein and appears to be a splay from the low sulphidation epithermal vein systems mapped in nearby old workings (La Colorada). It has a strike length of at least 500 m and remains open in both directions. The Company's diamond core drilling program at the Plomosas Silver Project is ongoing and includes shallow drill holes from surface, as well as underground drilling inside recently rehabilitated existing developments or old workings. The Company has increased the scale of the drill program at the Plomosas Silver Project from a previously released 4,500 m to a total of 11,900 m. There are currently five drill rigs on site, including one underground drill rig, as part of the resource expansion and discoveries drill program. The 29 drill holes in this news release were generated by: (a) GR Silver Mining's core drilling campaign (YES20-01), and (b) historical drill holes completed by Grupo Mexico, which make up part of an extensive surface and underground diamond core drilling database, that the Company continues to consolidate and validate. The Company believes that the San Juan Area represents a large, low sulphidation epithermal system. The company investigations to date have identified evidence of multiple events of mineralization, including a combination of precious and/or base metals in veins, veinlets, stockworks and hydrothermal breccias. This represents an opportunity for the definition of a resource in this area with the shallow surface drilling program to continue discovering new mineralized zones close to the surface. The Company has implemented QA/QC procedures which include insertion of blank 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.