Authors: van Wyk, SJ; Smit, PJL; van der Merwe, M

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DOI https://doi.org/10.36487/ACG_repo/852_29

Cite As:
van Wyk, SJ, Smit, PJL & van der Merwe, M 2008, 'Dealing with Operational Mine Waste Closure Constraints Through an Integrated Rehabilitation Policy — A Platinum Mine Case', in AB Fourie, M Tibbett, I Weiersbye & P Dye (eds), Mine Closure 2008: Proceedings of the Third International Seminar on Mine Closure, Australian Centre for Geomechanics, Perth, pp. 309-318, https://doi.org/10.36487/ACG_repo/852_29

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Abstract:
Mine waste stockpile facilities, including tailings dams, heap leach pads, rock dumps, slag dumps, open cast overburden and general waste disposal sites, are known to present, from an environmental perspective, the mining industry’s largest long-term surface liability. Focused management for closure during the life of a mine is widely acknowledged as the only means to cost-effectively minimize the impacts of these facilities on the surrounding environment during the life of a mine. Despite industry guidelines, scientific facility design, compliance with legislative processes and focused environmental management program (EMP) management, effective closure of these facilities still proves to be challenging. A review is presented, and a way forward for overcoming the operational constraints of concurrent mine waste facility rehabilitation is proposed. The operational challenges to mine closure are discussed, and an integrated policy model is proposed to deal with these challenges. Continuity of mine personnel, consultants, contractors and regulators, as well as poor aftercare regulation and limited budgets, are the main issues pertaining to operational mine waste facility closure constraints. One way to deal with these issues is to integrate closure practice during operations, which is driven by a closure policy, and followed through by strict operational procedures, continual monitoring, and sign-off of closed sites based on scientific information. This methodology also presents significant closure cost savings – doing it right the first time during the lowest financial risk period – and better closure liability estimates. The closure approach followed by LONMIN is a simple, yet effective way to deal with continuity, and sets high internal standards in the mine closure process.

References:
Australian Mining Industry Council (AMRH) (1989) Australian Mine rehabilitation Handbook, Dickson Act, 113 p.
Chamber of Mines of South Africa (1979) South Africa – Handbook of Guidelines for Environmental Protection
(SAGEP), Volume 1: The design, operation and closure of residue deposits. 156 p.
Chamber of Mines of South Africa (1979) South Africa – Handbook of Guidelines for Environmental Protection
(SAGEP), Volume 2: The vegetation of residue deposits against water and wind erosion, 40 p.
Sendlein, L.F.A., Yazicigil, H. and Carlson, C.L. (eds) (1983) Surface Mining, Environmental monitoring and
Reclamation Handbook, Elsevier, 750 p.
South Africa Department of Mineral and Energy Affairs (DME) (1995) Manual for the Construction, Operation,
Pollution Control, restoration and Decommissioning and After-care of Gold Tailings Dams in South Africa,
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Abbreviations
QA: Quantity assessment
QS: Quantity survey
CoP: Code of Practice
EIA: Environmental Impact Assessment
EMP: Environmental Management Program
EMPR: Environmental Management Program Report
EMS: Environmental Management System
EQC: Environmental Quality Control
ER: Environmental Risk
SHEC: Safety Health Environment Community
SHEQC: Safety Health Environmental Quality and Community
ZoI: Zone of Influence




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