2021-3-31 · Jan 20, 2009 · The Luxinge pre-treatment, dense media separation and recovery plants are now complete, and there is an estimated 30 000 cubic metres of alluvial gravel stockpiled in front of the pre-treatment plant.:::The 131.5 carat white diamond was the largest recovered by Lonrho since the company began treating alluvial gravel through its dense […]