TY - BOOK AU - Chifwaila, Noble TI - An Improved Support System for Safe and Economical Underground Excavation: A Case Study of Mindola Deeps Section, Zambia AV - CHI 2017 PY - 2017/// CY - Masters thesis PB - University of Zambia UR - http://thesisbank.jhia.ac.ke/8825/ ER -