Overview

Recent restrictions on the export of critical minerals have sparked a surge of global interest in securing these essential resources. The challenge is not a shortage of minerals worldwide, but the strategic imperative to diversify supply chains and strengthen resilience. In this session, Stephen Chandler will explore the fascinating world of critical mineral recovery from unexpected sources — including plant tailings and industrial side streams that are often overlooked.

Real-world examples will be discussed, such as gallium and germanium extraction from tailings, gallium recovery from Bayer liquor, and other innovative approaches that push the boundaries of resource utilisation. Alongside these successes, the talk will also examine projects that fell short, offering valuable lessons in what makes or breaks feasibility assessments.

Building on these case studies, Stephen will unpack the strategic feasibility assessment process for emerging critical mineral developments. Drawing on his extensive experience in project evaluation and resource strategy, he will highlight key drivers of feasibility, including technical readiness, market positioning, regulatory challenges, and sustainability considerations. By the end of the session, attendees will gain insights into both the opportunities and pitfalls of critical mineral recovery, and how strategic assessments shape the long-term success of projects in this rapidly evolving sector.

Speaker

Stephen Chandler, Lead Process Engineer, GHD

Stephen is a lead process engineer in GHD’s Adelaide Energy and Resources team with 24 years of experience delivering process and chemical engineering services across diverse sectors including minerals processing, plant utilities, water and wastewater, pharmaceuticals, and defence. He has worked predominantly in Australia, with project experience extending to Denmark and the USA.

Stephen has extensive expertise in uranium and copper production and has recently led several projects in the critical minerals space for multiple clients. At GHD, he specialises in mineral processing, project feasibility, and strategic assessments for emerging developments, integrating technical design with economic and environmental considerations to support sustainable outcomes. He contributes to multidisciplinary teams that deliver innovative solutions for clients across Australia and globally.

Time

19:00–20:00 UTC.

Software

The presentation will be delivered via Microsoft Teams. We recommend downloading the app from the Microsoft website, rather than using the web portal.