Even today, searching for gold is still a common pastime in some areas of New Zealand. Andreas Hauser also tried out this hobby in his two-year work stay at Massey University, but as a scientist, he looked for a possibility to optimise the process straightaway. ‘The fact that there are still a few rivers carrying gold in New Zealand inspired me, and it was there that I built my first prototype even though it was extremely modest,’ explains Hauser. The challenge is to also screen extremely small particles successfully, and to do so in an extremely high material flow. Read more about how Andreas Hauser and his colleague Thomas Koch came to presicion via optimisation.