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