Umtshina wokuvuza kwenhlansi kagesi ungomunye wemikhiqizo yokuhlola esekelayo yochungechunge lwe-Lesite yemishini yokushisela ye-geomembrane, ethola ukuvuza ngokukhipha amagagasi kagesi anemvamisa ephezulu.
Esizeni sokwakha, ikhwalithi yokushisela yamashidi epulasitiki ne-geomembrane itholwe ngokutholwa kokuvuza kwephoyinti eligxilile.