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Investigator Silver has reported an upgraded intersection of 10m at 2662 grams per tonne (g/t) silver at its Paris silver project in South Australia, strengthening the potential to expand the deposit beyond its current mine plan.
The results from drilling at Paris East included 4m at 5448g/t silver from 78m and a standout 1m interval at 13,302g/t from 80m.
The exceptionally high-grade result also stands well above historical geological benchmarks.
While these results documented across the Pacific, a United States Geological Survey study of 215 epithermal precious- and base-metal mining districts reported an average silver grade of 224g/t, which is less than one-tenth of the grade recorded in Investigator’s latest 10m intersection.
While the narrower high-grade intervals were previously reported in September, the latest assays have extended the broader mineralised intersection, reinforcing the potential for additional silver resources outside the existing definitive feasibility study (DFS) pit design.
Further drilling at Paris North returned an upgraded intersection of 4m at 2119g/t silver from 111m, including 2m at 4211g/t and 1m at 8120g/t.
Investigator Silver managing director Lachlan Wallace said the results were “another exciting outcome” from the campaign.
“The outstanding intersections… highlight the quality of the mineralised system and provide clear opportunities for growth of the silver inventory beyond the pit design that was used in the DFS,” Wallace said.
Additional drilling at Paris East returned 5m at 426g/t silver from 49m, including 1m at 1545g/t, while Paris West delivered 7m at 143g/t from 34m.
The results form part of Investigator’s approximately 30,000m reverse circulation drilling program, with more than 12,000m completed to date.
The campaign is targeting extensions around the DFS pit margins, improved resource confidence within the proposed starter pit and additional exploration opportunities across the broader Paris silver corridor.
Drilling at Paris East and West has also identified mineralisation around a narrow central section of the proposed pit, presenting opportunities to investigate a wider pit design.
“With our substantial 30,000-metre drilling program continuing to advance, we remain focused on expanding the Paris silver inventory and unlocking further value from the Project,” Wallace said.
“These results reinforce our confidence in the opportunities surrounding the existing deposit, and we look forward to reporting further results as we progress Paris towards development.”
The exploration progress follows a recent heritage clearance milestone, which covered all proposed disturbance areas within Investigator’s mining lease application; the clearance advances negotiations for a native title mining agreement and supports the remaining approvals required for development.
Located approximately 70km north of Kimba on the Eyre Peninsula, Paris hosts a mineral resource of 57 million ounces of silver and a maiden probable ore reserve of 33 million ounces.
The reserve was established through the February 2026 DFS, which provided the basis for the project’s proposed open-pit development.
Investigator is continuing infill and extension drilling, with results expected to inform an updated mineral resource estimate in 2027 and potential revisions to its pit design and mine plan.
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