"Knelson concentrators have, in a short space of time, changed the way that geologists and metallurgists think about gold. Gravity recoveries of over 30% used to be regarded as remarkable. Now, gravity recoveries up to 90% using Knelsons are not considered to be unusual except by those considerably out of touch with the industry. The challenge for innovators like Knelson is to reach those who have become stuck in their ways to the detriment of the profitability of their operations." - Phillip Hellman, Director - Hellman & Schofield Pty Ltd., Australia ...more > >