Etsa kopo ho thapo e hlobotseng ea moea o tlase (Cu.Or Alu) e hokelang thapo e sirelelitsoeng kapa mochini o khabisitseng pele (Cu, Kapa Alu.) Mohala o ka sehloohong: aerial Cu kapa Alu. Tlanya mohala: Cu kapa Alu e sirelelitsoeng. 'Mele o sireletsang o entsoe ka matla a phahameng, lisebelisoa tsa boemo ba leholimo le tsa mochini.