As climate change and human migration accelerate globally, decision-makers are seeking tools that can deepen their understanding of the complex nexus between climate change and human migration. These tools can help to identify populations under pressure to migrate, and to explore proactive policy options and adaptive measures. Given the complexity of factors influencing migration, this article presents a system dynamics-based model that couples migration decision making and behavior with the interacting dynamics of economy, labor, population, violence, governance, water, food, and disease. The regional model is applied here to the test case of migration within and beyond Mali. The study explores potential systems impacts of a range of proactive policy solutions and shows that improving the effectiveness of governance and increasing foreign aid to urban areas have the highest potential of those investigated to reduce the necessity to migrate in the face of climate change.

This paper presents an overview of a new application specifically developed for the planning and scheduling of sublevel caving (SLC) projects and operations. Conventional mine planning software tools are not well suited to the evaluation of this type of deposit due to their inability to model the dilution behaviour. The overall purpose of this application is to enable a user to schedule a deposit effectively and efficiently for the feasibility of mining using the SLC method. Much of the logic in the module is similar in concept to that used in Gemcom's PCBC software (Diering, 2000) for block cave operations. Tools for layout generation of tunnels and rings provide a basis for the subsequent generation of production schedules. Ore recovery and dilution modelling are included, but rely strongly on reasonable calibration against historic mining or other models such as REBOP (Itasca Consulting Group, 2000) (REBOP is a code for rapid simulation of the flow of fragmented rock in cave mining operations based on PFC, Particle Flow). Some examples are provided showing either small test cases of a few rings or larger problems of several thousand rings. https://papers.acg.uwa.edu.au/p/1002_15_Villa/ A new mine planning tool for sublevel caving mines D. Villa and T. Diering 238

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