Isitena esingatshiswanga luhlobo olutsha lwezixhobo zodonga ezenziwe ngothuthu lwempukane, i-cinder, i-gangue yamalahle, i-tail slag, i-slag yeekhemikhali okanye isanti yendalo, udaka lonxweme (enye okanye ngaphezulu kwezi zinto zingasentla) ngaphandle kokubala ukushisa okuphezulu.

Ngenkqubela eqhubekayo yokufudukela kwabantu ezidolophini, iya isanda inkunkuma yokwakha kwiminyaka yakutshanje, nto leyo eye yazisa ingxaki kwisebe lolawulo lweedolophu. Urhulumente uye waqonda ngokuthe ngcembe ukubaluleka kokulungiswa kobutyebi benkunkuma yokwakha; Ukusuka kwelinye imbono, inkunkuma yokwakha luhlobo lobutyebi. Emva komgca wokuvelisa izitena uLeishi Chengxin, unokuba ludonga olutsha olufumaneka ngokukhawuleza kumaxesha anamhlanje, kwaye sele isetyenziswe ngokupheleleyo.

I-fly ash yeyona nto ingcolisa imo engqongileyo. E-China, imveliso ifikelela kumawaka eetoni, kwaye uninzi lwazo alusetyenziswanga, olungachithi nje izibonelelo, kodwa lunokubangela ukwanda kokungcoliseka kwendalo. Enyanisweni, i-fly ash ikwayinto efanelekileyo yokwenza izitena ekrwada. Emva komgca wokuvelisa izitena zeLeishi Chengxin, inokuba yinto entsha eludongeni olufutshane kumaxesha anamhlanje, esele isetyenziswe ngokupheleleyo.

Ayisiyiyo kuphela inkunkuma yokwakha, uthuthu lwempukane, imisila, ukunyibilikiswa kwesinyithi kunye nezinye inkunkuma eqinileyo, umatshini wenkunkuma yokwakha weLei Shi Chengxin ongatshiyo unokuguqula inkunkuma ibe bubutyebi, kwaye “usana” oluvelisiweyo lukwasebenza kugcino lwamanzi, udonga, umhlaba, igadi kunye neminye imiba!