Idaho Strategic Resources Completes Surface Mining of High-Grade Jumbo Vein - Portal and Underground Exploration Planned

About this update from Idaho Strategic Resources, Inc.

[{"type":"text","content":" COEUR D'ALENE, ID / ACCESSWIRE / May 18, 2023 / Idaho Strategic Resources (NYSE American:IDR) (\"IDR\" or the \"Company\") is pleased to announce the recent completion of surface mining of the high-grade Jumbo Vein and plans for exploration of the Jumbo Vein by drifting along the vein from the pit bottom. Surface mining of the Jumbo Vein resulted in 4,000 tonnes of ore at a grade of 17.3 grams per tonne (gpt) gold. IDR Vice President Grant Brackebusch commented, \"Following completion of surface mining, we plan to advance an underground drift to the south along the vein towards a high-grade drill intercept from 2011 (GC 11-41T: 0.9 meters (m) true thickness at 137 gpt gold) which is at about the same elevation as the bottom bench - 1069 m (see Figure 1). As previously mentioned, it is worth noting that the sample from the Jumbo Vein where it enters the pit wall was 0.6 meters (m) wide (true thickness) and assayed 152 gpt gold.\" Figure 1 - Generalized Geologic Map of Jumbo Pit (view to southeast) The Jumbo Vein consists of a banded quartz vein that typically occurs 10 to 20 m in the hanging wall of the Idaho Fault. It is known to occur in the central part of the Golden Chest mine property and had minor production in the late 1890's to early 1900's. The recent surface mining consisted of a small pit on a near-surface section of the vein, following it down from the 1115 m elevation to the 1069 m elevation. On each mined bench, the Jumbo Vein was typically exposed for 22-26 m along strike with a width of 0.3 to 1.0 m. The average vein strike was N18oE and average dip was 53o NW. The vein was well-oxidized with abundant iron-oxides and minor amounts of pyrite, arsenopyrite, and chalcopyrite. Visible gold was often seen in hand samples. As the Jumbo Pit was mined, blast hole drill cuttings were sampled and assayed to direct ore control. An average weighted grade for the ore polygons, based on the blast hole samples, was 13 gpt gold. However, more selective mining occurred along the vein in practice and composite samples of mined truckloads showed a higher weighted average of 17.3 gpt gold. Three vein chip samples were taken across the vein exposed in the southeast pit wall as mining progressed down in the Jumbo Pit and the results are displayed below (lengths of sample are in true thickness). Sample Elevation (m) True Thickness Vein...

More updates from Idaho Strategic Resources, Inc.