The Robert M. Buchan Department of Mining Faculty Publications
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Item Predictive Geometallurgy and Geostatistics Lab - Annual Report 2022(Predictive Geometallurgy and Geostatistics Lab, Queen’s University, 2022) Ortiz, Julian M.; Avalos, Sebastian; Casson, David; Kheirparast, Soheil; Larrondo, Paula; Li, Tong; Marino, Alvaro; Potakey, Noble; Moraga, CarlosThe 2022 annual report summarizes the ongoing research of the Predictive Geometallurgy and Geostatistics Laboratory at Queen’s University in Kingston, Ontario, Canada. The team continued to work under some restrictions due to the pandemic, but was able to produce quality research and engage in several collaborative projects.Item Predictive Geometallurgy and Geostatistics Lab - Annual Report 2021(Predictive Geometallurgy and Geostatistics Lab, Queen’s University, 2021) Ortiz, Julian M.; Altinpinar, Mehmet; Avalos, Sebastian; Casson, David; Koruk, Kasimcan; Larrondo, Paula; Riquelme, Alvaro I.This report summarizes the ongoing research of the Predictive Geometallurgy and Geostatistics Laboratory at Queen’s University in Kingston, Ontario, Canada. 2021 was a challenging year, with continuous restrictions to meetings and limited group interactions. Despite these difficulties, the lab completed important and novel work, making important contributions to research and industry.Item Hacia un legado positivo: Preguntas clave para evaluar la adecuada gestión del cierre de minas y el periodo posterior al cierre(Anthony Hodge Consultants, 2023-01) Hodge, R. Anthony; Brehaut, HenryThe purpose of this work is to offer a list of questions that will facilitate enhancement of stakeholders’ understanding of: the closure/post-closure phases of mining; strengthened assessment of the adequacy of closure/post-closure plans and actions over both the short and long terms; identification of the risks inherent in a company’s commitment, plans, and financial capability to close mines in keeping with its long-term environmental, social, and financial obligations; and constructive discussions between stakeholders related to the achievement of a positive legacy.Item Towards a Positive Legacy: Key Questions to Assess the Adequacy of Mine Closure and Post-Closure(Anthony Hodge Consultants, 2023-01) Hodge, R. Anthony; Brehaut, HenryThe purpose of this work is to offer a list of questions that will facilitate enhancement of stakeholders’ understanding of: the closure/post-closure phases of mining; strengthened assessment of the adequacy of closure/post-closure plans and actions over both the short and long terms; identification of the risks inherent in a company’s commitment, plans, and financial capability to close mines in keeping with its long-term environmental, social, and financial obligations; and constructive discussions between stakeholders related to the achievement of a positive legacy.Item Multiple-point statistics: tools and methods(Queen's University, 2020) Avalos, Sebastian; Ortiz, Julian M.Geostatistical simulation is used in uncertainty quantification and management in many fields of Earth Sciences. Conventional tools account only for two-points statistics and are unable to capture complex features. Multiple-point statistics (MPS) simulations provide improved flexibility to reproduce complex features and can be used for categorical and continuous variables, or even in a multivariate context, but these methods also bring new challenges in regards to inference, computational implementation and validation. In this paper, we review the methods and tools necessary to implement and use MPS methods. The place of multiple-point simulation is discussed and a review of the building blocks required to implement a MPS method are presented. We describe the main methods and discuss some of the assumptions, challenges and limitations of these methods. MPS simulation expands the toolkit of earth scientists and may be key to assess transfer functions that are dependent on specific connectivity patterns.