Nkọwapụta Dị mkpirikpi:

Isi nke iron a nke casting 431 igwe anaghị agba nchara, nwere nnukwu ike ndọda. A na-abawanye ka ihe atụ nke kụrụ, nke bụ 20% buru ibu karịa ụdị iron. Tinyekwuo mpaghara dị ụtọ, kwesịrị ekwesị maka ndị mbido na aka ekpe.