VANCOUVER, British Columbia, May 24, 2023 — Prime Mining Corp. (“Prime” or the “Company”) (TSX-V: PRYM, OTCQX: PRMNF, Frankfurt: 04V3) reported new results from core drilling at the Z-T Area, one of three main zones hosting a gold-silver mineral resource estimate (“MRE”) announced May 2, 2023 at the Company’s Los Reyes project located in Sinaloa State, Mexico. Prime’s recently announced MRE contains 1,470,000 Indicated AuEq1 ounces at a 1.68 gpt average grade and 730,000 Inferred AuEq ounces at 1.26 gpt average grade (see May 2, 2023 news release and below for additional details). Results reported today are from fourteen new core holes drilled at the southeast end of the Z-T Area (see Figure 1) and are all
outside of the recently announced resource pit shell from the Z-T Area. This drilling confirms the potential ongoing expansion of gold-silver resources in addition to and not included in the Company’s MRE. This drilling follows similar Z-T results released January 11, 2023.