Conference Proceedings - World Mining Congress 2026

1868 thanks are given to the underground crews - drilling, blasting, planning, geotechnical, and survey personnel - for their precise execution and consistent data collection efforts. As Orica Mining Services Peru engineers responsible for the technical development of this paper, the authors also acknowledge the valuable contributions of their colleagues within Orica in blast design development, drill deviation analysis, vibration monitoring and control strategies, and post-blast performance analysis. REFERENCES Henríquez, J., Cortés, H. and Morales, D., (2025). A methodology to define drill and blast designs for drawbells at the Chuquicamata underground mine. Proceedings of the European Federation of Explosives Engineers (EFEE), J. Honkanen et al. 13th World Conference on Explosives and Blasting. Krakow, Poland. 175–182. Mateo, A., Asencios, E. and Oré, B., (2022). Aplicación Del Método Sublevel Stoping Con Relleno Cementado en Minera Colquisiri. Perumin 35 Convención Minera, Arequipa, Perú. 408–422. Gomez, F., Valencia, J. F. and Ríos, S., (2022). Optimización de las actividades de perforación y voladura en la UM San Rafael mediante la implementación en campo del modelo de rotura y la predicción de cavidades. Perumin 35 Convención Minera, Arequipa, Perú. 171–186. Roy, D., Williams, T. and Preston, C. J., (2019). Transforming Underground Blasting Operations into Primary Crushing Operations. Proceedings of the International Society of Explosives Engineers (ISEE). 45th Annual Conference on Explosives and Blasting Technique. Nashville, Tennessee. Onederra, I. A. (2004). Breakage and fragmentation modeling for underground production blasting techniques. IRR Drilling and Blasting 2004 Conference, Perth, IRR. Player, J. and Perara, V., (2008). A back analysis of dilution and recovery in longitudinal sublevel. 5th International Conference and Exhibition on Mass Mining. Luleå, Sweden: Luleå University of Technology. 575-584. Córdova, E., Gottreux, I., Anani, A., Ferrada, A., and Contreras, J.S. (2021). Blasting and preconditioning modelling in underground cave mines under high stress conditions. Journal of the Southern African Institute of Mining and Metallurgy, vol. 121, no. 2. 71–80. Nong, M.J., Uludag, E., Leeuw, P.J.K. (2025). Using the Aegis underground drill and blast analyser to optimise drill patterns: A case study. Journal of the Southern African Institute of Mining and Metallurgy, vol. 125, no. 9. 533–542 Zhou, X., Zhao, X., Qu, Q., Shi, J. (2023). Stope Structural Parameters Design towards Green and Deep Mining: A Review. Processes 2023, 11, 312

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