Telfer Resource Expands 150% to 8 Million Ounces
Greatland Resources (ASX:GGP) announced a major operational update on March 30, 2026, revealing a 150% expansion of the mineral resource at its flagship Telfer operation in Western Australia. The updated estimate adds 4.8 million ounces of gold, bringing the project's total to 8.0 million ounces. This significant growth was achieved through an aggressive 2025 drilling campaign of over 134,000 meters at a world-class discovery cost of approximately US$5 per ounce.
Critically for future production, the higher-confidence Measured and Indicated (M&I) resource category increased by 163% to 3.8 million ounces. This portion of the resource provides a stronger foundation for converting mineral resources into economically mineable reserves. The expansion includes a 135% increase at the West Dome Open Pit to 4.9 million ounces and a maiden underground resource at West Dome of 0.6 million ounces, highlighting the project's growing scale and operational flexibility.
Shares Gain 11% Despite Weaker Gold Prices
The market reacted decisively to the resource upgrade, sending Greatland's shares up 11.07% to close at A$10.84 on the Australian Securities Exchange. The single-day gain made it a top performer on the ASX 200 and provided a sharp reversal after the stock had declined 25% over the past month. This strong performance occurred even as the broader gold sector faced headwinds, with spot gold prices trading down approximately 15% over the same period to around US$4,500 per ounce.
The positive stock reaction demonstrates investor focus on the company's operational execution and improved long-term value proposition. The ability to deliver such a substantial, high-quality resource upgrade allowed Greatland to defy the weaker sentiment surrounding precious metals and attract significant buying interest.
Upgrade Cements Path to Mid-Tier Producer Status
This resource update solidifies Greatland's transformation from an explorer to a significant gold producer. The combined resource for its Telfer and Havieron projects now stands at 14.9 million ounces of gold and 645,000 tonnes of copper, placing the company in a peer group with established mid-tier Australian producers. The substantial increase in the M&I category is a crucial step toward extending the mine's life and enhancing project economics, as these resources are the primary feedstock for future Ore Reserve statements.
While the company still faces execution risks associated with converting resources to cash flow, management plans to continue its aggressive exploration. A further 100,000 meters of drilling are planned for the second half of fiscal 2026, signaling that the company views this upgrade as a milestone rather than a final destination. The market will now watch for an updated mine plan to see how this larger resource translates into future production profiles and shareholder value.
