Ngwaahịa ọhụrụ nnukwu ihe ọkpụkpụ na-awụ elu ọla n'èzí
Anyị na-etinye aka na ụlọ ọrụ ihe ọkpụkpụ maka afọ 43, na-anabata gị ịhazi ihe ọkpụkpụ marble, ihe ọkpụkpụ ọla kọpa, ihe ọkpụkpụ igwe anaghị agba nchara na ihe ọkpụkpụ fiberglass.