Dị ka mkpa ndị ahịa si dị, dị iche iche nkọwa nke Ọstrelia ebuli n'elu ikpo okwu ụgbọ ala, Ọstrelia ebuli hydraulic nyiwe, Ọstrelia hydraulic ikpo okwu lifts, Ọstrelia ụgbọ-n'ịnyịnya ikuku ọrụ nyiwe nwere ike ahaziri.Nabata ọhụrụ na ochie ahịa na bia kparita uka.