Slope Stability Assessment and Underground Mine Design Analysis of Achibo-Sombo Underground Conventional Coal Mine, Southwest EthiopiaMulata Haftu, Bheemalingeswara Konka, Kifle Woldeargay and Asmelash AbayE3S Web Conf., 15 (2017) 01004DOI: https://doi.org/10.1051/e3sconf/20171501004