Izisombululo zethu zombane weloli kunye nezixhobo zikhusela kwaye ziphucule iindawo zokuthutha.Iintsimbi zodidi lokuqala zikhusela nayiphi na indawo echasene nefuthe lomatshini, i-thermal kunye neekhemikhali.Oku kukwathetha ukuba iilayini zithintela iimpahla ekuncamatheleni nasekukhenkceni xa zithuthwa.