Hi David, thanks for the question. If you have an idea, please add it to the entries section. I had a look at the abstract for the paper on the link and in the end, this is quite similar to our existing operations, however this site appears to also need grinding for mineral liberation. Spirals are used, so likely a lot of water required as well. Low and high intensity/gradient magnetic separators are commonly used, in both wet and dry applications. Your solution may include some of these.