Gestion des déchets miniers : Études de cas du Ghana et du Canada

This case study by the International Institute for Sustainable Development (IISD) examines mine waste management frameworks in Ghana and British Columbia, Canada. It outlines international best practices, such as the Global Industry Standard on Tailings Management (GISTM), and compares how these two jurisdictions implement standards, corporate accountability, and financial mechanisms to mitigate the environmental and social risks of mine waste.

• Effective mine waste management policies should follow a 'plan-do-check-act' cycle, beginning with controls during the planning phase to ensure waste management plans cover all stages from operation to post-closure.
• The Global Industry Standard on Tailings Management (GISTM) 2020 is identified as the most comprehensive current standard, aiming for 'zero harm' to people and the environment.
• Ghana faces challenges in corporate accountability and financial guarantees; current legislation does not explicitly require financial guarantees to cover all remaining reclamation work, often leading to governments accepting less than the actual liabilities.
• Ghana is utilizing a Multilateral Mining Integrated Project (MMIP) to formalize artisanal and small-scale mining (ASM), using satellite imagery to monitor land conversion, which averaged -2,600 ha/year in southwestern Ghana between 2005 and 2019.
• British Columbia's regulatory framework was significantly strengthened following the August 4, 2014, Mount Polley tailings dam breach, which was caused by an unidentified weak clay layer under the dam foundations.
• In response to the Mount Polley incident, British Columbia introduced requirements for an independent tailings review board and a designated engineer for all tailings storage facilities, and established a Mine Audits and Effectiveness Unit in 2020.
• British Columbia's 2019 budget included a 20 million Canadian dollar commitment to improve mining regulatory effectiveness after the Auditor General found a lack of resources and independence for inspections and enforcement.

APA

Hill, J., & Gillman, M. (2021). Gestion des déchets miniers : Études de cas du Ghana et du Canada. International Institute for Sustainable Development. https://www.iisd.org/system/files/2023-03/igf-case-study-mine-waste-management-canada-ghana-fr.pdf

Chicago

Hill, Jenifer, and Matthew Gillman. Gestion des déchets miniers : Études de cas du Ghana et du Canada. International Institute for Sustainable Development, 2021. https://www.iisd.org/system/files/2023-03/igf-case-study-mine-waste-management-canada-ghana-fr.pdf.

Wikipedia

{{cite report |last1=Hill |first1=Jenifer |last2=Gillman |first2=Matthew |title=Gestion des déchets miniers : Études de cas du Ghana et du Canada |publisher=International Institute for Sustainable Development |date=2021 |url=https://www.iisd.org/system/files/2023-03/igf-case-study-mine-waste-management-canada-ghana-fr.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{hill2021gestion, author = {Hill, Jenifer and Gillman, Matthew}, title = {{Gestion des déchets miniers : Études de cas du Ghana et du Canada}}, institution = {International Institute for Sustainable Development}, year = {2021}, url = {https://www.iisd.org/system/files/2023-03/igf-case-study-mine-waste-management-canada-ghana-fr.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }