Lucara Botswana's Karowe Diamond Mine employs an autogenous (AG) mill. The AG mill acts as a tumbling mill where the ore is reduced in size by the interaction between the pieces of ore through tumbling. This non-crushing process, along with more sophisticated sensor-based bulk sorting using X-Ray Transmission (XRT) technology, has resulted in less diamond breakage and the ability to recover the exceptional stones for which Karowe is now famous. Check out the short video below of Lucara Botswana’