Mabenyane a silevera a boreleli a lula a le teng ka thekiso e ntle, a manehiloe ka khauta ea ‘nete, theko e rekisoang ka bongata ho tsoa ho rona ea utloahala, mme re ts’episa ho sebelisa silevera ea boleng ba 92.5% eseng boleng bo bobe ba silevera kapa ba silifera e ka tlase ho 92.5%.