Ngwa, a na-etinye ezé na-egbutu coal n'ọtụtụ ebe na akụrụngwa eji arụ ọrụ na-egwupụta kol.A na-eji ha egbutu, gbajie, na wepụta coal nke ọma.Ezé ndị a na-ewepụta nke ọma na coal site na akwa akwa, na-eme ka nhazi na njem na-esote.Ezé na-egbutu coal nwekwara ike ịhụ ngwa n'ọrụ owuwu ọwara.A na-eji ha na-egbutu ma na-agbaji okwute, ala, na ihe ndị ọzọ, na-enyere aka n'ịgwupụta ọwara na ịrụ ọrụ.Dị ka ojiji ha na-egwupụta coal, coal cuttin ...