62 REFERENCE Conrad, W.J. & Neuwirt, A.M. (2019). Using an Integrated Monitoring Platform to Communicate Geotechnical Risk to Project Stakeholders. In J. Wesseloo (ed.), MGR 2019: Proceedings of the First International Conference on Mining Geomechanical Risk. Australian Centre for Geomechanics, Perth, pp. 171-180. https://doi.org/10.36487/ACG_rep/1905_07_Conrad. de Graaf, P.J.H., & Wessels, S.D.N. (2016). A Framework for Managing Geotechnical Risks in Various Operations. Journal of the Southern African Institute of Mining and Metallurgy, 116(5), 367 -377. http://dx.doi.org/10.17159/2411- 9717/2016/v116n5a2. Elin Trinovita, & Nofie Iman Vidya Kemal, (2018). Implementation of Lean Six Sigma at PT. Pamapersada Nusantara Arem Project Hia, S.W., Singgih, M.L. and Gurning, R.O.S. (2025), "The application of lean six sigma to improve mining transportation overall vehicle effectiveness (MTOVE): a case study in mining company", International Journal of Lean Six Sigma, Vol. 16 No.