Sircel is an australian-owned and operated green technology company solving the ever-growing e- waste crisis. Sircel has engineered a world-leading, end-to-end, large-scale recycling process, to extract source materials from electronic waste for reuse in the circular economy. Sircel has processed over 6300 t of e-waste to date with a >90 per cent commodity recovery, with significant plans to scale operations in the coming years. The pressure to secure strategic and critical metals is driven in large part by the exponential increase in demand of technology. as a society, we regularly discard obsolete technology to consume new technology and so it stands to reason - what is the impact of circular economies on resource security? The full suite of elements on the critical minerals list are used in electronics manufacturing - from household items to civic infrastructure - including solar and al server farms. Thus, e-waste is a viable source of critical minerals that requires no exploration, discovery or development - we simply need to think differently about re-mining materials already liberated from the ground. Sircel currently operates six sites along the east coast of australia, including physical processing and hydrometallurgy sites. Our process currently recovers base, precious and platinum group metals with a multistage R&D focus on recovery of critical metals like Ge, Ga, Ta. Sircel's commitment to divert e-waste from landfill goes beyond valuable resource recovery and encompasses the re-purposing of all outputs from our process. This holistic approach has required significant focus on development of a true circular economy, whereby we have built synergistic and/or mutually beneficial relationships with partners operating in the recycling, chemical, mining, industrial and manufacturing spaces. The presentation will expand on the technical, social, governance and environmental challenges and opportunities to tap this significant source of critical minerals.