C. I. Nwoye

Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

A. O. Agbo

Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria

C. C. Nwogbu

Science Technical Vocation Schools Management Board, Enugu, Nigeria

S. Neife

Department of Metallurgical and Materials Engineering, University of Nigeria Nsukka, Nigeria

E. M. Ameh

Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria