About the Book
Guidelines for Open Pit and Waste Dump Closure provides a benchmark reference for geotechnical and hydrogeological professionals, and other closure stakeholders, involved in assessing and implementing the closure of open pits and waste dumps. It defines a state-of-best-practice geotechnical and hydrological pathway that reflects current industry-wide experience; considers the perspectives of the operator, regulator and community; and encompasses closure planning, design, implementation and monitoring.
Written by industry experts and practitioners, Guidelines for Open Pit and Waste Dump Closure is the sixth in a series of books developed by the Large Open Pit (LOP) Project. Focused on the technical challenges related to geology, geotechnical engineering, water and geochemistry, it covers the key aspects that relate to closure of open pits and waste dumps, including planning, long-term physical and chemical stability and post mining land use (PMLU). The book also includes workflows that provide clarity on geotechnical and hydrogeological assessments relating to closure planning; definition of pragmatic objectives and measures of success; implementation and monitoring for open pits and waste dumps for closure; and how these may interact with adjacent land uses.
Drawing on global lessons learned on mine closure over a period of more than 30 years, this comprehensive guide uses industry experience to set out a road map to closure and potentially relinquishment of open pits and waste dumps. It will be invaluable for mine closure practitioners, corporate planners, mine management, mining engineers and technical staff, mine stakeholders and regulators.
Table of Contents:
Preface and acknowledgements
Introduction
Geoff Beale, Trevor Carter, Phil de Graaf and Carl Grant
1 Framework
Geoff Beale, Phil de Graaf, Trevor Carter, Carl Grant and Darren Murphy
2 Closure Reimagined
Derek Chubb, Phil de Graaf, Justin Dixon and Geoff Beale
3 Context, requirements and objectives
Carl Grant, James Otto, Darren Murphy, Daniel Limpitlaw, Harley Lacy and Garyn Rapson
4 Mine closure planning
Darren Murphy, Bjorn Weeks, Daniel Limpitlaw, Paul Mitchell and Carl Grant
5 Site characterisation
Trevor Carter, Geoff Beale, Phil de Graaf, Katie Hill, Dennis Becker, Paul Dittrich and Michael Etezad
6 Risk management
Justin Dixon, Phil de Graaf, Trevor Carter, Francisco Silva and Mark Hawley
7 Hydrogeology for open pit closure
Geoff Beale, Justin Dixon, Steve Skidmore, Martin Williams and Marc Rougier
8 Open pit closure design
Trevor G. Carter, Pete F. Stacey, John Read and Phil de Graaf, with specific section contributions by others
9 Waste dump and stockpile closure
Mark Hawley, Justin Dixon, Chris Waygood and Jose Martín Duque
10 Final closure plan
Martin Williams
11 Implementation
Geoff Beale, Phil de Graaf, Mathieu Desjardins and Joost Reidel, with specific section contributions by others
12 Monitoring
Bob Sharon, Geoff Beale, Phil de Graaf, Mark Hawley and Paolo Farina, with specific section contributions by others
Epilogue
Phil de Graaf, Geoff Beale and Trevor Carter
Appendix A – Assessment of seismicity and seismic hazard for closure design
Yusof Ghanaat, Ivan Wong, Rigo Rimmelin, Mehdi Serati, Trevor Carter and Phil deGraaf
Appendix B – Additional soil slope design considerations for open pit closure
Michael Etezad, Dennis Becker, Paul Dittrich, Geoff Beale and Trevor Carter
Appendix C – Additional rock slope design considerations for closure planning
Trevor Carter, Loren J. Lorig, John Read, Phil de Graaf and Pete F. Stacey
Glossary
Index
About the Author :
Phil de Graaf is a professional engineer with over 30 years’ experience in geotechnical design and implementation. He is an experienced practitioner in managing geotechnical risks relating to mine design, operation and closure.
Geoff Beale has worked for 47 years in water management for the minerals industry and has worked in over 70 countries. He is well known for his wide-ranging experience with open pit and underground mine dewatering, environmental planning of mine sites and mine closure, and has been involved with many of the world’s largest mining operations.
Dr Trevor Carter has been involved with mine closure studies and implementation for more than 40 years, both on behalf of the minerals industry and with regulators. He currently is an independent consultant with continuing involvement on a number of mining and hydropower review boards worldwide.
