Letšeng Diamond mine is situated high in the Maluti Mountains in the Kingdom of Lesotho, southern Africa. Letšeng Diamonds (Pty) Ltd holds the mining lease granted in 1999 by the Government of Lesotho.
Ketso, started practising as an Advocate with Makhera Elliots Chambers between 2004 to 2005 and also served the Government of Lesotho as the Assistant Master of the High court between 2005 and 2009. He is currently working as the Managing Director of the Taxco Consultants Company. He holds both his BA Law degree and LLB from the National University of Lesotho. Ketso was appointed to the Board by the Government of Lesotho in 2011.