1. Department of Agricultural Engineering , Federal University Wukari , Taraba State , Nigeria
2. Department of Mechanical/ Production Engineering , Abubakar Tafawa Balewa University , Bauchi , Bauchi State , Nigeria
3. Department of Mechanical Engineering , Federal University of Agriculture Makurdi , Benue State , Nigeria
4. Department of Mechanical Engineering , University of Jos , Plateau State , Nigeria
5. Department of Mechanical Engineering , Ahmadu Bello University , Zaria , Kaduna State , Nigeria