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Closure planning practice and landscape performance at 57 Canadian and U.S. mines

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dc.contributor.author McKenna, Gord
dc.contributor.author Dawson, Richard F.
dc.date.accessioned 2009-06-30T17:03:02Z
dc.date.available 2009-06-30T17:03:02Z
dc.date.issued 1997
dc.identifier.uri http://hdl.handle.net/2429/9873
dc.description.abstract A large number of operating, dormant, and abandoned minesites in Canada and the U.S. were visited in 1996 to gather information on closure planning practice and to observe the performance of reclaimed landscapes. Information was compiled from mine tours and through on-site interviews with reclamation and environmental personnel. Most Canadian mines are on the closure path and have completed their first conceptual closure plan, usually in response to new government regulations. However, there is considerable uncertainty regarding several key closure issues including certification, abandonment, long-term residual liability, financial assurance, and numerous technical issues. Most mining landforms are showing good performance in terms of physical stability and revegetation. However, there is some uncertainty regarding the long-term reliability and performance of some landforms, most notably constructed rivers, end-pit lake filling, and tailings slopes. Difficulty in prediction of the long-term performance of closure landscapes has, in part, lead to a certification barrier. Very few mines have requested or achieved certification of reclaimed land, despite the fact that certification is usually the stated objective of reclamation activity. Although most mine reclamation focuses on certification, a more strategic focus is required. The ultimate objective for mine reclamation should be custodial transfer of the land (to the crown or a third party), with certification being one step on the closure path. Due to the concerns about long-term liability for reclaimed sites, a transfership barrier exists and very little reclaimed mine land has been transferred to new owners. Landscape engineering (setting goals, designing for closure, using landforms and vegetation that have sustainable and reliable long-term performance) is perhaps the next major step in mine reclamation practice. Aspects of this approach have already been adopted by several mines and research is ongoing. en
dc.format.extent 1237960 bytes
dc.format.mimetype application/pdf
dc.language.iso eng en
dc.relation.ispartofseries British Columbia Mine Reclamation Symposium 1997 en
dc.title Closure planning practice and landscape performance at 57 Canadian and U.S. mines en
dc.type text en
dc.type.text conference Paper en
dc.description.affiliation Applied Science, Faculty of en
dc.description.reviewstatus en
dc.rights.copyright British Columbia Technical and Research Committee on Reclamation en


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