Boab Metals has flagged visually high-grade galena mineralisation at the Norton deposit within its Sorby Hills silver-lead project in Western Australia’s East Kimberley, with laboratory assays confirming the grades due late this month. The update matters because Sorby Hills is no longer just an exploration story. It is a fully funded project already under construction, and any resource upgrade could extend mine life just as first concentrate production approaches in the second half of 2027.
Reserve Conversion Drilling Wraps Up
Boab has completed roughly 60 percent of its 2026 Phase IX program at Sorby Hills, finishing all planned reserve conversion drilling across the B, Omega and Norton deposits using sonic and diamond core holes. More than 860 samples have been submitted for laboratory analysis. Boab has stressed that the visual galena observations reported so far are not a substitute for assayed grades, a caveat issued in late July that reflects how closely disclosure is scrutinised for a construction-stage asset rather than an early-stage explorer. Drilling has since moved north to the Beta deposit and will also test the Keep prospect and Boab’s wholly owned Manbarrum project.
Timing Meets a Tight Silver Market
The assay results, due in late September, land against a backdrop the Silver Institute describes as a sixth consecutive annual market deficit, with silver trading near US$67 an ounce after touching an all time high above US$120 earlier this year, a run this site has tracked through the ASX silver cohort. A resource upgrade would arrive just as investors pay close attention to Australian producers nearing silver-lead output.
A Project Already De-Risked
Unlike many silver explorers still chasing feasibility studies, Sorby Hills is fully funded through a A$236 million syndicated debt facility and is under construction, with early works and bulk earthworks already underway. A positive assay outcome would not create a new project, it would extend the runway on one the market has already priced as a near-term producer within Australia’s silver mining sector. That is a rarer combination than a price-driven rerate, and it is why shareholders are watching the assay queue closely this month.
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