Heavy Rare Earths Limited (ASX:HRE) is set to kick off its maiden drilling campaign at the South Ridge tin project in Prospect Hill, South Australia, following environmental approvals and cultural heritage clearances. The ~2,500m program aims to define a maiden resource against a backdrop of surging global tin prices and recent weather-related delays.
- Updated environmental program lodged for South Ridge drilling
- Collaboration with Dieri Aboriginal Corporation for heritage clearance
- ~2,500m drilling planned with 24 RC and 5 diamond holes
- Schedule delayed by record South Australian rainfall and road damage
- Tin prices up nearly 20% year-to-date amid supply challenges
Maiden Drilling Program Ready to Roll at Prospect Hill
Heavy Rare Earths Limited (ASX:HRE) is gearing up to commence its inaugural drilling campaign at South Australia’s largest and most advanced tin project, South Ridge, located within the Prospect Hill tenements. The company has lodged an updated Program for Environment Protection and Rehabilitation (PEPR) with the Department for Energy and Mining (DEM), a critical step toward unlocking the project’s considerable potential.
Set to kick off in early June, the ~2,500 metre drilling program will comprise 24 Reverse Circulation (RC) holes complemented by 5 diamond drill holes. This campaign is designed to expand on historical data that flagged high-grade tin mineralisation over a 500-metre strike length, with the ultimate goal of delivering a maiden Mineral Resource Estimate.
Weather Delays and Cultural Engagement Shape Timeline
While the program was initially slated for early Q2, exceptional rainfall across South Australia in the first quarter, more than double the average annual precipitation within two months, wreaked havoc on regional access roads, pushing back drilling plans. Repairs are underway, and access is expected to be fully restored shortly.
Alongside regulatory approvals, HRE is working closely with the Dieri Aboriginal Corporation, the registered Native Title Body Corporate for the Dieri People, to conduct cultural heritage clearance surveys at Prospect Hill. These surveys, planned for early May, reflect a concerted effort to engage respectfully with traditional owners ahead of ground disturbance.
Strategic Positioning Amidst Surging Tin Prices
The timing of this maiden drilling effort is particularly pertinent given tin’s recent price rally. Global tin prices have soared nearly 20% year-to-date, buoyed by supply risks in key producing countries such as the Democratic Republic of Congo, Indonesia, and Myanmar. Concurrently, demand from the electronics sector and electric vehicle market, itself stimulated by elevated oil prices, is intensifying pressure on supply.
HRE’s Chair, Gabriel Chiappini, emphasised the project’s flagship status and the company’s readiness to leverage these market conditions. The engagement of a South Australian-based drilling contractor underscores HRE’s commitment to local partnerships and operational efficiency.
Building on Historical Data to Define a High-Grade Resource
The Prospect Hill project covers 75 square kilometres along the north-western margin of the Curnamona Craton, an area known for polymetallic mineralisation in Palaeoproterozoic volcanic rocks. HRE acquired extensive historical data, including intersections like 5 metres at 3.22% tin, suggesting strong potential to delineate high-grade deposits.
The South Ridge prospect, with 56 previous drill holes and costeaning, remains the most advanced target. The upcoming drilling program aims to test extensions of known mineralisation and collect metallurgical samples through diamond drilling, essential for future resource development.
This push toward a maiden resource estimate follows HRE’s earlier announcement of the 2,500-metre drill program and permit preparations earlier this year, indicating steady progress despite environmental and logistical challenges. The company’s approach aligns with its broader exploration strategy, which recently uncovered valuable rare earth minerals at Radium Hill, another project within its portfolio, highlighting a multi-commodity potential in South Australia High-Value Minerals at Radium Hill.
Bottom Line?
HRE’s maiden drilling at South Ridge will be a critical test of its high-grade tin potential, with market conditions and cultural engagement adding layers of complexity and opportunity.
Questions in the middle?
- Will the PEPR approval process proceed smoothly given recent environmental and cultural considerations?
- How will ongoing weather and infrastructure challenges impact the drilling timeline and costs?
- To what extent can HRE’s maiden resource estimate at South Ridge capture the high-grade potential suggested by historic data?