Ngwa: A na-ejikarị kemịkalụ, mineral (ọdabara maka nhazi ngwaahịa na-abụghị nke ịnweta, dị ka calcium carbonate, kaolin quartz, talc, mica, wdg), metallurgy, abrasive, ceramics, ihe na-egosi ọkụ, ọgwụ, pesticides, nri, ahụike. akụrụngwa, na ụlọ ọrụ ihe ọhụrụ.