Re k'hamphani ea litsebi e shebaneng le tlhahiso e kopaneng ea quartz ka lilemo tse 10.
Ho tloha ha e thehiloe ka 1999, Limela tse fetang 100 tsa PSA, ho kenyeletsoa likarolo tse kholo ka ho fetisisa lefatšeng-sete e le 'ngoe ea lisebelisoa tsa VPSA-CO le VPSA-O2, li entsoe le ho fanoa ke PIONEER.