Kingston Resources has delivered a fresh batch of high-grade polymetallic assay results from underground drilling at its Southern Ore Zone, Mineral Hill, reinforcing the geological model and underpinning near-term underground mining plans.
- High-grade polymetallic mineralisation validates SOZ geological model
- Significant intercepts with strong copper equivalent grades
- Results support conversion of resources to mineable reserves
- Underground development and stoping activities accelerated
- Upcoming gold and silver production from Pearse South Open Pit
High-Grade Assays Reinforce SOZ Development Prospects
Kingston Resources (ASX:KSN) has bolstered confidence in its Southern Ore Zone (SOZ) underground project at Mineral Hill with a new tranche of high-grade polymetallic assay results. The latest diamond drilling campaign has confirmed the continuity and location of mineralisation, underpinning near-term underground development and stoping activities.
Key intercepts include a standout 7.5m interval grading 7.25% copper equivalent (CuEq) from 38.6m in hole KSNDDH062, featuring 1.2g/t gold, 3.31% copper, 5.67% lead, and 76g/t silver. Other highlights are 2.1m @ 14.28% lead and 3.98% zinc from 36m in KSNDDH056, and 6.1m @ 5.04% CuEq from 60.5m in KSNDDH063. These results demonstrate robust polymetallic value with contributions from copper, gold, silver, lead, and zinc, which collectively enhance project economics.
Assay Results Validate Geological Model and Mine Planning
The drilling outcomes validate the existing SOZ geological model, providing important assurance for mine planning and resource conversion. The polymetallic mineralisation occurs within structurally controlled breccia and vein systems, with a clear zonation from lead-zinc-silver rich upper levels to copper-gold dominant lower zones. Kingston’s Managing Director Andrew Corbett highlighted the strong copper-equivalent grades and continuity, noting multiple production fronts are emerging to build a pipeline of high-quality ore sources supporting both near-term cash flow and long-term value creation.
This confirmation aligns with the company’s recent efforts to expand underground mining operations, following a 29% resource base increase reported earlier in the year. The new assays complement the previous high-grade polymetallic growth reported from underground stoping areas, reinforcing confidence in Mineral Hill’s development trajectory.
Metal Equivalent Calculations and Economic Implications
Kingston applies a copper equivalent (CuEq) formula incorporating metallurgical recoveries and market price assumptions to express the polymetallic intercepts in comparable terms. Recoveries are based on historical plant performance and recent metallurgical test work, with copper, gold, silver, lead, and zinc all factored into the economic analysis. This methodology highlights the significant in-situ value of the SOZ mineralisation beyond individual metal grades.
The company’s existing processing infrastructure at Mineral Hill is capable of producing separate copper, lead, and zinc concentrates alongside precious metal doré, positioning the project to capitalise on the polymetallic nature of the orebody. This multi-commodity approach supports diversified revenue streams and potential margin expansion.
Ongoing Development and Upcoming Production Milestones
Alongside the underground drilling, Kingston plans to advance underground level development at SOZ while continuing gold and silver production from the Pearse South Open Pit. The company remains focused on converting measured and indicated resources; which currently comprise 60% of the nearly 10 million tonne resource base; into ore reserves to sustain mining operations through to 2031.
While the latest drilling results strengthen near-term mine planning, several drill holes still have pending assay results that could further refine resource models. The company’s consistent reporting and methodical approach to underground exploration suggest a steady progression towards operational expansion.
Bottom Line?
Kingston’s latest SOZ assays solidify the underground mining case at Mineral Hill, but pending results and development execution remain key to unlocking full project value.
Questions in the middle?
- How will pending assay results from recent drill holes influence resource confidence and mine planning?
- What timelines does Kingston envisage for ramping up underground stoping and production at SOZ?
- How might fluctuating metal prices impact the economic viability of Mineral Hill’s polymetallic concentrates?