Closure & Reclamation

Mine closure plans, reclamation, abandonment, post-closure monitoring

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First Bi-Annual Northern Latitudes Mining Reclamation Workshop, Program & Abstracts (Alaska-Yukon Mining Working Group, September to October 2001)
30 September 2001Report
Conference proceedings from the First Bi-Annual Northern Latitudes Mining Reclamation Workshop held in Whitehorse, Yukon, September 30 - October 3, 2001, featuring technical sessions, posters, and field trips on mine reclamation, closure, and remediation in northern climates, with emphasis on acid rock drainage, vegetation restoration, water quality prediction, and abandoned mine site rehabilitation.
Closure & Reclamation Revegetation Acid Rock Drainage
Terms of Reference and Work Plan for the Environmental Assessment, Snap Lake Diamond Project (MVEIRB, September 2001)
20 September 2001Report
The Mackenzie Valley Environmental Impact Review Board issued comprehensive Terms of Reference and Work Plan for the environmental assessment of De Beers Canada Mining Inc.'s proposed Snap Lake Diamond Project, an underground mine with 22-year operating life requiring detailed evaluation of environmental, social, economic, and cultural impacts.
Development Plans Regulatory Traditional Knowledge
Policy for Water Licence Security Deposits, Policy Statement No. HQ.08 (DIAND, September 2001)
17 September 2001Report
This policy manual establishes federal procedures for requiring, administering, and managing security deposits from water licence applicants and licensees in the Northwest Territories, Nunavut, and Yukon regions to ensure the Crown is protected against costs of site abandonment, restoration, and ongoing remediation. The policy prescribes acceptable forms of security, principles for determining deposit amounts using the RECLAIM calculation method, and detailed administrative procedures for deposit receipt, renewal, and claims.
Regulatory Water Licence Closure & Reclamation Correspondence
Aspects of Prevention, Mitigation and Reclamation, Metal Leaching and Acid Rock Drainage Course (Ron Nicholson, August 2001)
22 August 2001Presentation
A lecture on metal leaching and acid rock drainage prevention, mitigation, and reclamation strategies delivered by Ron Nicholson covering oxidation processes in sulphide minerals, disposal methods (underwater and engineered covers), treatment options, and site-specific considerations for permafrost, arid, and saline environments.
Acid Rock Drainage Waste Rock Geochemistry
Terms of Reference Technical Responses and Recommendations, Ekati Diamond Mine Expansion (BHP Billiton, August 2001)
20 August 2001Report
This document is a Terms of Reference review with technical responses and recommendations from various regulatory agencies and stakeholders regarding BHP Diamonds Inc.'s proposed expansion of the Ekati Diamond Mine involving three new kimberlite pipes (Sable, Pigeon, and Koala). The review addresses consultation requirements, environmental assessment scope, closure and reclamation planning, hazardous materials handling, and cumulative watershed impacts.
Development Plans Traditional Knowledge Closure & Reclamation
Introduction to Metal Leaching and Acidic Drainage, Course Outline (North West Community College, August 2001)
20 August 2001Report
A five-day course outline on metal leaching and acid rock drainage assessment, prediction, and mitigation strategies for mining operations, delivered by North West Community College in August 2001. The course covers material characterization, field assessment, case studies of operating and closed mines in British Columbia, and decision-making frameworks for managing ML/ARD risks at mine sites.
Acid Rock Drainage Waste Rock Water Quality Development Plans
Community Needs, Mine Development Planning and Acid Rock Drainage (Glenda Ferris, August 2001)
~2001Presentation
Approximate date — inferred from filename
Glenda Ferris presents a framework for community engagement in mine development planning, emphasizing the need for transparent consultation on acid rock drainage risks, technical capacity building, and equitable inclusion of all community members—including First Nations—throughout mine conception, operation, and post-closure phases.
Acid Rock Drainage Waste Rock Closure & Reclamation
Introduction to Metal Leaching and Acid Rock Drainage: Aspects of Prevention, Mitigation and Reclamation, Beyond Yes or No Answers (Kidd Metallurgical Division, July 2001)
11 July 2001Presentation
Presentation by Ron Nicholson on metal leaching and acid rock drainage prevention, mitigation, and reclamation, delivered at Northwest Community College in August 2001, introducing methodology for quantifying environmental impacts from sulphide mine waste and establishing priorities for mitigation efforts.
Acid Rock Drainage Waste Rock Geochemistry
Summary of the Equity Silver Mine 2000 Security Review (IEMA, June 2001)
22 June 2001Report
This security review report evaluates the financial and environmental requirements for reclamation and long-term management of the closed Equity Silver Mine in British Columbia, calculating a net present value liability of $23.55 million based on projected lime treatment costs, operating expenses, and periodic maintenance through 2070. The review establishes operational protocols for acid rock drainage treatment, cost triggers for security adjustments, and monitoring requirements to manage environmental risks including contaminated drainage and aquatic ecosystem impacts.
Closure & Reclamation Acid Rock Drainage Waste Rock
Reclamation Liability Estimate & Demolition and Salvage Estimate, Ekati Diamond Mine (Komex, May 2001)
31 May 2001Report
Komex International prepared a reclamation liability estimate for the Ekati Diamond Mine comparing current liability costs (approximately $50.8 million) with ultimate closure costs (approximately $136.4 million) across multiple mine components including open pits, tailings cells, waste rock piles, and camp facilities, using the RECLAIM model and incorporating site-specific data and professional judgment.
Closure & Reclamation Closure Plan Waste Rock Monitoring
Reclamation Liability Estimate, Appendices, Ekati Diamond Mine (Komex, May 2001)
18 May 2001Report
Komex International provides a comprehensive reclamation liability estimate for BHP Diamonds' Ekati Diamond Mine closure, detailing assumptions and cost models for decommissioning, contaminated site remediation, pit flooding, post-closure monitoring programs, and site restoration activities across multiple operational areas and facilities.
Closure & Reclamation Closure Plan Waste Rock Geochemistry
Reclamation Liability Estimate & Demolition and Salvage Estimate, Ekati Diamond Mine (Komex, May 2001)
10 May 2001Report
Komex International Ltd. prepared a reclamation liability estimate for BHP Diamonds Inc.'s Ekati Diamond Mine using Monte Carlo Simulation methodology to calculate comprehensive closure and reclamation costs for 2001, 2005, 2010, and 2014, with median estimates ranging from $50.8 million to $90.3 million across various liability units including pit flooding, facility decommissioning, monitoring, and revegetation.
Closure & Reclamation Closure Plan Waste Rock Water Quality Revegetation Fish Habitat
Environmental Agreement and Water Licence Annual Report 2000, Ekati Diamond Mine (BHP Billiton, March 2001)
31 March 2001Report
BHP Diamonds Inc. submitted its 2000 Environmental Agreement and Water Licence Annual Report for the Ekati Diamond Mine, documenting the second full year of mine production and compliance with regulatory requirements. The report covers mining operations at four kimberlite pits, environmental monitoring programs, reclamation activities, and continuous improvements including management of processed kimberlite, sewage discharge relocation, and mitigation of low dissolved oxygen in Kodiak Lake.
Environmental Agreement Water Licence Monitoring
Land Use Permit Conditions Workshop Presentation (MVLWB, March 2001)
20 March 2001Presentation
This presentation by the Mackenzie Valley Land and Water Board outlines current standard land use permit conditions under the Mackenzie Valley Land Use Regulations, identifying areas requiring improvement in wildlife protection, traditional ecological knowledge integration, and consistency across permit applications. The document includes detailed examples of specific permit conditions addressing location, equipment, methods, chemical storage, habitat protection, and land restoration.
Land Use Permit Regulatory Fish Habitat Traditional Knowledge
Independent Environmental Monitoring Agency (IEMA) Overview & Sable, Pigeon & Beartooth Expansion Presentation, with MVEIRB Technical Comments Letter (IEMA, September 2000 to March 2001)
15 March 2001Report
This document comprises an organizational overview of the Independent Environmental Monitoring Agency (IEMA) for the Ekati Diamond Mine, including its governance structure, mandate, and regulatory framework, followed by the Agency's detailed technical comments on BHP's Environmental Assessment Report for the proposed Sable, Pigeon, and Beartooth kimberlite pipe extensions submitted to the Mackenzie Valley Environmental Impact Review Board in September 2000. The Agency identifies significant information gaps and recommends additional geochemical testing, monitoring enhancements, and further assessment of alternatives such as underground mining before project approval.
Environmental Agreement Development Plans Traditional Knowledge
Environmental Agreement Annual Report Plain English Summaries, 1999 to 2000 (BHP Billiton, 1999 to 2001)
1 March 2001Report
BHP's Environmental Agreement Annual Report 2000 provides a comprehensive summary of environmental monitoring and mining operations at the Ekati Diamond Mine in the Northwest Territories for the year 2000. The report documents air and water quality monitoring, wildlife effects assessments, waste management practices, reclamation efforts, and integration of traditional knowledge from Aboriginal groups in environmental management at the mine.
Environmental Agreement Monitoring Water Quality
Report of Environmental Assessment on the Proposed Development of Sable, Pigeon and Beartooth Kimberlite Pipes (MVEIRB, February 2001)
7 February 2001Report
The Mackenzie Valley Environmental Impact Review Board's Report of Environmental Assessment on the proposed development of Sable, Pigeon and Beartooth kimberlite pipes by BHP Diamonds Inc., recommending approval subject to mitigation measures to prevent significant adverse effects on the environment and communities in the Mackenzie Valley.
Development Plans Regulatory Water Quality
Report of Environmental Assessment on the Proposed Development of Sable, Pigeon & Beartooth Kimberlite Pipes, Ekati Diamond Mine (MVEIRB, February 2001)
2001Report
Mackenzie Valley Environmental Impact Review Board (MVEIRB) Report of Environmental Assessment on the Proposed Development of Sable, Pigeon and Beartooth Kimberlite Pipes, February 7 2001 (Box 938 Scotia Centre, 5102-50th Avenue, Yellowknife). Concludes BHP did not provide adequate analysis of post-1995 EIA actuals to confirm/modify community-health/wellbeing predictions, projects federal revenue increase of net positive $108 million per year for three development years, and includes referenced documents like Praxis Inc. / Gordon Lennie / Scott Williams (BHP Environment and Resource Planning Manager) Sept 26 2000 responses to DFO Technical Review comments on the BHP Expansion EAR and BHP Responses to Yellowknives Dene Comments.
Development Plans Regulatory Closure & Reclamation Wildlife Air Quality
Panda Diversion Channel Monitoring Program Technical Report, Ekati Diamond Mine (BHP Billiton, January 2001)
31 January 2001Report
This 2000 technical monitoring report documents the third year of the Panda Diversion Channel (PDC) monitoring program, which tracks the effectiveness of fish habitat compensation efforts at the Ekati Diamond Mine. The report presents findings on channel hydrology, spring fish migration patterns, larval fish development, habitat assessments, channel stability, and biological communities, demonstrating that Arctic grayling successfully use the constructed channel for spawning and migration between North Panda and Kodiak lakes.
Fish Habitat Aquatic Effects Monitoring (AEMP)Monitoring Benthic Invertebrates Water Quality
Processed Kimberlite Tailings Reclamation Annual Report, Ekati Diamond Mine (BHP Billiton, 2000)
19 January 2001Report
This annual report documents a reclamation research study on processed kimberlite tailings from the Ekati Diamond Mine in the Northwest Territories, examining physical and chemical amendments to stabilize mine waste with vegetation cover. Field and greenhouse trials tested combinations of peat, lake sediment, sewage sludge, and calcium amendments to improve plant growth on tailings at Long Lake Containment Facility Cell B.
Closure & Reclamation Kimberlite Tailings Revegetation Monitoring

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