RE:Improving economics on all glory holesIt's an example of how technology has changed ore handling
https://www.youtube.com/watch?v=No2jXSOago4
At the same time (even though in the proof of concept state) there is still room for pick and shovel boys like the Gloryhole
X-Ray Transmission Material Sorting (XRT)
The material was prepared by hand in order to have a particle size range between -60mm and +10mm. Coarser particles were broken using a hammer and finer particles were removed using screens and stored.