kimberlite deposits and geology formation of diamonds16 apr 2017 . jwaneng also in botswana 44 carats per hundred tons and letseng in lesotho a mere 2 carats per hundred tons. so you might ask how letseng.
Advantages of drill machines used at letseng diamonds
pre-concentration of low grade lateritic sulphide .focus on dense medium separation and classification applications. 2006-2008. minopex: plant metallurgist - letseng diamond mine in lesotho. was responsible.