Sierra Grande Minerals Inc. announced that it has completed drone-based aeromagnetic surveys at its B&C Springs Property in Western Nevada, which along with previously collected soil and rock geochemical data and preliminary geologic mapping, further highlight the exploration potential. surveys will lead to drill-testing of targets which display the most attractive combination of geological, geochemical, and geophysical features. The drone-mag surveys at B&CS covered the entirety of the property with flight lines spaced 50m apart and flown on lines perpendicular to known and/or interpreted stratigraphic, structural, mineralized and altered trends.

The goal of the survey was to better outline and target altered and mineralized trends and allow the Company to trace the trends beneath areas that are partially to completely covered by overburden. On the B&CS property there is extensive but generally thin overburden comprising the head of a broad pediment fan which obscures a large area separating precious metals showings to the west, on Almadex's Davis Gold Property, from showings to the east, in the Mildred Mine area, where the Company's earlier soil sampling work yielded a number of highly anomalous samples. During First Quarter of 2022, following the Company's recognition of the potential of the covered area, and after staking a large number of new claims, a short prospecting program yielded a number of high-grade grab samples, including those returning 17.35, 30.9 and 150.5 g/t Au.

Furthermore, limited outcrop exposed in drainages lying within the bounds of the pediment area indicates that the overburden there is generally thin and that the rocks are altered along structures. Now that the airborne magnetometer work is complete, the Company is contemplating next steps. These include plans for ground-based CSAMT (controlled source audio-magnetic telluric) and/or IP (Induced Polarization) geophysical surveys, but not until further mapping, prospecting, and sampling are undertaken.

The purpose of this follow-up work will be to closely define drill targets along trends showing the greatest potential to host economic mineralization.