Ekukhetheni izinto zoshishino, umbuzo oqhelekileyo ovela kubathengi uthi, “Yeyiphi engcono, yi-nickel okanye yi-copper?” Nangona kunjalo, enyanisweni, akukho “ngcono” ngokupheleleyo, kuphela “ifanelekile ngakumbi”—i-nickel igqwesile ekumelaneni nokugqwala kunye nokumelana nobushushu obuphezulu, ngelixa i-cop...
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