en.Wedoany.com Reported - On August 12, Polymetals Resources reported new silver-lead-zinc mineralization results from underground diamond drilling on the Upper Main Lode at the Endeavor Mine in New South Wales, Australia. Among the results, hole POL025 intersected a 39-meter mineralized zone from 17 meters downhole depth, with an estimated true width of 23 meters, grading 502 g/t silver, 6.9% zinc, 5.4% lead, and 0.87 g/t gold.
Hole POL022A intersected 42.8 meters of mineralization from 19.4 meters downhole, grading 358 g/t silver, 8.3% zinc, 4.7% lead, and 1.25 g/t gold; hole POL017 intersected 32.75 meters from 26.25 meters downhole, grading 386 g/t silver, 7.8% zinc, 4.5% lead, and 0.91 g/t gold.
Other sulfide mineralization results include hole POL023, which intersected a 17.3-meter mineralized zone grading 427 g/t silver, 7.5% zinc, and 4.4% lead; hole POL021, which intersected a 14.1-meter mineralized zone grading 435 g/t silver, 6.9% zinc, and 4.2% lead; and hole POL019, which intersected a 12.8-meter mineralized zone grading 426 g/t silver, 5.8% zinc, and 3.5% lead.
The drilling also covered the weathered, oxidized, and supergene enrichment zones above the main sulfide mineralization. Hole POL030 intersected a 22.5-meter mineralized zone grading 6% lead from 47.6 meters downhole, and returned a 3.4-meter interval grading 320 g/t silver from 80.6 meters; hole POL028 intersected a 9.7-meter mineralized zone grading 4.7% lead from 53.5 meters downhole.
This drilling campaign focused on the area affected by the 1996 mine collapse. After re-analyzing historical mining records, survey data, and underground workings, Polymetals believes the collapse zone may be smaller than previously estimated. Drilling results released by the company in June confirmed broad silver-lead-zinc mineralization near existing underground workings, while July results further demonstrated continuity of mineralization between adjacent drill holes. The drilling program has now advanced to the stage of defining orebody geometry and resource estimation.
The Endeavor Mine currently has underground mineral resources of 16.3 million tonnes averaging 8% zinc, 4.5% lead, and 84 g/t silver; Phase 1 ore reserves stand at 6.6 million tonnes averaging 4.32% zinc, 2.04% lead, and 73 g/t silver. The mine was acquired by Polymetals in August 2024 and resumed production in June 2025.
Polymetals will continue underground drilling and integrate the new results with historical mining, survey, and geological data for modeling, with a focus on defining the boundaries and continuity of the remaining mineralization around the collapse zone. The first mineral resource estimate for the Upper Main Lode is planned for release later in 2026.
