• High-resolution ground gravity survey now underway at the highly prospective Rochefort Gold Prospect
• Survey designed to refine structural architecture and accelerate high-confidence drill targeting
• Rochefort located just north of the producing Crown Prince deposit (2.2Mt @ 3.9g/t Au for 279koz)

Premier1 Lithium Limited (ASX:PLC) is pleased to announce the commencement of a high-resolution ground gravity survey at the Rochefort Gold Prospect, part of its Abbotts North Project. The project lies approximately 35 km north of Meekatharra in Western Australia's highly endowed Murchison region. Notably, Rochefort is situated only ~20 km north of the Crown Prince deposit, a standout recent discovery and development success hosting 2.2 Mt @ 3.9g/t Au for 279 koz, within the same productive greenstone belt. The gravity survey aims to refine PLC's understanding of the key structural framework controlling gold mineralisation and to precisely map critical lithological contacts, including a late-stage granite intrusion to the north that has seen minimal historical exploration. The insights from the survey will play a pivotal role in refining and prioritising high-impact drill targeting, accelerating the Company's exploration efforts in this promising region. Rochefort was initially identified through geological mapping and rock chip sampling, which returned high-grade results of up to 11.7g/t Au. Follow-up soil sampling has since defined a coherent ~400m x 350m gold-in-soil anomaly, confirming the prospect's scale and continuity. The quartz dolerite host is particularly prospective, creating favourable rheological contrast within tightly folded ultramafic sequences, a recognised setting for significant Yilgarn gold systems.

The gravity survey will deliver sharper structural insights, enabling Premier1 to prioritise high-confidence drill targets with great precision. Given the prospect's close proximity to the Crown Prince deposit, the company views Rochefort as a compelling and scalable exploration opportunity.