"Slag is a by-product of metal smelting, and at least 43m Metric Tonnes of it are known to be produced every year in the process of refining metals & making alloys. Slag has many uses, and rarely goes to waste, but it is used in low value applications such as ballast in concrete and in aggregate road materials. However, slag retains significant amounts of metals & these are sometimes recovered by re-melting the slag, but this is extremely expensive with a very high energy burden and Carbon footprint. Our proven ""Ultroslag"" concept is to use a novel technology to selectively break down the non-metallic components of slag from the metallic particles. We have completed a proof of concept project, adding our own innovations to this process and the results demonstrate full separation of all metal from non-metal particles. The benefits of our process vs existing process are: • >90% saving in energy consumption & cost, • Rapid local turnaround of material, • >90% cut in the carbon footprint, • Retain control of metal recovered. • Enable smelters to recover more metal and on-site, removing the need to export for processing, • Retain control of metal recovered. • Recovery of salt as an added revenue."