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How Did American Tungsten Overestimate Antimony Grades at Antimony Canyon?
1:32pm on Monday 23rd of March, 2026 AEDT
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How Did American Tungsten Overestimate Antimony Grades at Antimony Canyon?
1:32pm on Monday 23rd of March, 2026 AEDT
Key Points
Visual estimates overstated antimony grades due to pyrite mimicking stibnite
Competent Person reviewed and approved initial visual logging
Subsequent assays showed much lower antimony grades in key drill holes
Company implemented revised logging protocols and peer review
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AMERICAN TUNGSTEN & ANTIMONY (ASX:AT4)
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