Geological mapping and stand-up time estimation based on core drill evaluation using RMR89 on Tunnel 3 Sigli Banda Aceh Toll RoadHanif Khoirul Latif, Salahuddin Husein and I Gde Budi IndrawanE3S Web Conf., 325 (2021) 02004DOI: https://doi.org/10.1051/e3sconf/202132502004