Focus Minerals (ASX: FML) has confirmed open pit potential through drilling at the Green Light deposit and the nearby historic 1991 CNX waste dump in Western Australia.

Green Light is an emerging deposit within the Coolgardie Gold Project, which covers 119 sq. km of highly prospective tenements on the outskirts of the Coolgardie township in the Goldfields region. Coolgardie is one of Western Australia's historic gold mining centres, and Focus's ground position there anchors its broader strategy of rebuilding production in the district. Focus operates the nameplate 1.2 million tonnes per annum (Mtpa) processing plant at Three Mile Hill, located less than two km from Green Light — a proximity that reduces the haulage and infrastructure barriers that often delay development decisions at emerging deposits.

The deposit is described as a lookalike to the 152,000-ounce CNX gold deposit. The CNX stage 1 pit sits less than 200m south-east of Green Light and comprises a mine-depleted ore reserve as of 31 December 2025 of 1.18 million tonnes (Mt) at 1.19 grams per tonne (g/t) for 45.2K ounces. Both CNX and Green Light host bulk-style mineralisation within the G2 quartz granophyric sub-unit of the Three Mile Sill, meaning the geology, geometry and mining characteristics demonstrated at CNX provide a directly relevant analogue for how Green Light might be evaluated.

Optimally oriented infill RC drilling to a nominal 20m spacing in 2026 aims to upgrade the parts of the Green Light resource most likely to be amenable to open pit mining into a high-quality Indicated Mineral Resource suitable for an open pit feasibility study and mining approval. Under the JORC Code, which governs mineral resource reporting for ASX-listed miners, an Indicated classification carries a higher confidence level than Inferred and is typically a prerequisite for ore reserve estimation and definitive feasibility work.

Green Light lies within the Three Mile Hill mine stratigraphy, two km north-west of the Three Mile Hill ROM pad and processing plant. The resource sub-crops over a drill-defined strike of 400m and remains open along strike and at depth — meaning further drilling results remain a key catalyst for defining the deposit's full extent.

Historic production at Green Light has been minimal, limited to a couple of minor shafts, one of which is named Princess Midas. Along strike to the south-east, the Three Mile Hill open pit recorded historic production of 4.2 Mt at 2.4 g/t Au for 324,000 ounces. The historic 1991 CNX trial pit delivered historic production of 196Kt at 1.86 g/t for 11,700 ounces. The CNX pit was mined in 1991 as a 30m-deep, 270m-long north-west striking open pit.

Focus Minerals has advanced work at Green Light toward completing mining feasibility.

FML shares were up 0.72% at $2.09, with a market capitalisation of $593.1M.