C. I. Nwoye

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

I. C. E. Umeghalu

Department of Agric and Bioresoures Engineering

S. E. Ede

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

N. I. Amalu

Project Development Institute Enugu

W. C. Onyia

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

N. E. Idenyi

Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria