Rethinking deep bulk mining

Authors: Kangas, J; Wimmer, M; Moss, A Download Paper

Cite As:
Kangas, J, Wimmer, M & Moss, A 2024, 'Rethinking deep bulk mining', in Daniel Johansson & Håkan Schunnesson (eds), MassMin 2024: Proceedings of the International Conference & Exhibition on Mass Mining, Luleå University of Technology, Luleå, pp. 1375-1385.



Abstract:
The current plan for LKAB’s Kiruna operation is to bulk mine to depths of more than 1300m by SLC, extending mine life to 2050 and beyond. The goal is safe, reliable production based on a plan incorporating the constraints of a seismically active mine. A substantial effort is underway to improve SLC performance as part of the safe, reliable production initiative, building on experience from LKAB’s mines and other analogous operations. The effort has two components: one technical and one behavioural. The technical focus is developing SLC sequences, layouts, support systems and procedures required for a successful deep mine. Behaviour focuses on ensuring that the technical tasks and processes can be assimilated into the day-to-day organisation. Though the technical aspects of mining at depth are significant, the challenge of changing how things are done is perhaps more so. On paper, technical change is easy, but a transition process requires management systems and, more importantly, behaviours to be adapted to meet the rigour and discipline required for deep mining. What has worked in the past is not necessarily appropriate for the future. Technical and behavioural changes cannot be done in isolation. Robust communication is required so everyone involved understands the issues and the part they play. This takes time. Meanwhile, the operation must continue to produce in a way that does not compromise the changes required. The paper describes the challenges Kiruna is facing together with the solutions required to meet the goals of safe, reliable production.