Business
Wallal Phase I Diamond Drilling Programme Update
First Development Resources PLC has successfully completed the technically challenging phase of drillhole 1 at the Wallal project, targeting the Eastern Magnetic Bullseye anomaly. The drillhole advanced through the Wallal Sandstone formation using mud rotary drilling. The company mitigated technical challenges with the expertise of the drilling team and support from DDH1 Drilling Limited. Drilling operations have transitioned to coring, progressing towards the basement geology, which is interpreted to host the magnetic bullseye target. The company's assets comprise eight granted tenements covering a total area of 2,314.4km2. Disclaimer*
About this update from First Development Resources Plc
[{"type":"text","content":"\n\n \n29 September 2025\nFirst Development Resources plc\n('First Development\", \"FDR\" or the \"Company')\nWallal Phase I Diamond Drilling Programme Update\nFirst Development Resources plc (AIM: FDR) the UK based, Australian focused exploration company with mineral interests in Western Australia and Australia's Northern Territory, provides an update on the Company's Phase I Diamond Drill Programme at the Wallal project in Western Australia's Paterson Province.\nThe Company is pleased to report the successful completion of what it believes is the most technically difficult phase of drillhole 1 which is targeting the Eastern Magnetic Bullseye anomaly (see Figure 1 & Figure 2). Using the mud rotary drilling technique, the drillhole has advanced through the Wallal Sandstone formation which is a major constituent of the sedimentary cover sequence. Although several technical challenges were encountered within the Wallal Sandstone, they were effectively mitigated by the expertise and collaborative efforts of the onsite drilling team and operational support provided by FDR's drilling partner DDH1 Drilling Limited. The experience gained whilst drilling the hole will significantly benefit the Company.\nDrilling operations have now transitioned to coring which is progressing well. The hole is now advancing towards the basement geology which is interpreted to host the magnetic bullseye target (Figure 2).\n\nFigure 1: Aerial view of the Wallal Phase I Diamond Drilling site and the FDR core logging facility, Paterson Province, Western Australia, September 2025\n \n\nFigure 2: Interpreted cross-section of the Eastern Magnetic Bullseye Anomaly and the Planned Downhole Trace of Drillhole 1 and the Expected Vertical Depth to Basement\n \n \n \nFor further information visit www.firstdevelopmentresources.com or contact the following:\n\n\n\n\nFirst Development Resources plc\nTristan Pottas (CEO)\n\n\nTel: +44 (0) 20 3778 1397\n\n\n\n\n \nAbout Reach announcements\nThis is a Reach announcement. Reach is an investor communication service aimed at assisting listed and unlisted (including AIM quoted) companies to distribute media only / non-regulatory news releases into the public domain. Information required to be notified under the AIM Rules for Companies, Market Abuse Regulation or other regulation woul...