Thunderbird Operations and Sales Update

Release Highlights:

• Sheffield Resources Ltd. (ASX: SFX) has increased its zircon sales guidance for the March 2025 quarter to between 55,000 and 70,000 tons, surpassing the previous estimate of 40,000 to 60,000 tons, while the total ilmenite concentrate shipment estimates remain unchanged at 160,000 to 180,000 tons.
• Due to Cyclone Zelia causing the temporary closure of the Great Northern Highway, liquified natural gas (LNG) supply to the Thunderbird Mineral Sands Mine has been constrained, leading to a temporary suspension of mining and processing operations, though product shipments and sales remain unaffected, with operations expected to resume once supply routes are restored.
• Sheffield Resources continues its transition to drill and blast mining, with a new waste mining contractor mobilizing to site, while ongoing business improvement initiatives aim to reduce costs and enhance throughput, with further updates to be provided on productivity-enhancing measures throughout 2025.