Closure & Reclamation

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

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Ecosystem Approach, Sustainable Development and Compensation Critique of BHP Environmental Impact Statement (Northern Environmental Coalition, February 1996)
~1996Letter
Approximate date — inferred from filename
David Schnellen critiques BHP's environmental impact assessment for the proposed diamond mine, arguing that the EIS fails to employ a genuine ecosystem approach to aquatic systems, inadequately characterizes biological communities, and cannot fulfill a sustainable development standard or 'no net habitat loss' policy given the permanent destruction of multiple lakes. The document recommends staged project development with lake refilling strategies and recalculated compensation based on realistic recovery timelines extending over centuries.
Aquatics Fish Habitat Development Plans Closure & Reclamation
Northern Environmental Coalition Technical Submission to the Federal Environmental Assessment Panel, BHP Diamond Mine (Multiple parties, February 1996)
1996Regulatory Filing
Submission PH-022(a)+(f) — joint Technical Submission to the Federal Environmental Assessment Panel by the Canadian Arctic Resources Committee (CARC), Canadian Nature Federation / Fédération Canadienne de la Nature, Ecology North, World Wildlife Fund (WWF), and the Northern Environmental Coalition (c/o #3-4807 49th Street, Yellowknife). Includes Section 3.2 "A Critique of BHP's Impact Assessment for Aquatic Ecosystems" by Dr. David Schindler (Killam Memorial Professor of Ecology, University of Alberta) arguing the community-approach diagram is inadequate for an ecosystem approach. Also covers community-based research methodology, employment economic value of land-based activities, and BHP's Community-Based Job Development Strategy programs for contractors/subcontractors.
Development Plans Traditional Knowledge Aquatics Closure & Reclamation Regulatory
Recommendations to the Federal Panel Reviewing the BHP Project (YKDFN, February 1996)
1 February 1996Letter
Yellowknives Dene First Nation submits comprehensive recommendations to the federal panel reviewing the BHP diamond mine project, addressing land rights, environmental management, Traditional Knowledge integration, water and wildlife protection, reclamation, socio-economic benefits, and negotiation of a Development Impact Benefit Agreement.
Traditional Knowledge Yellowknives Dene Development Plans
Statement to the General Session, BHP Diamond Mine Environmental Assessment Review Panel (Dave Olesen, February 1996)
1 February 1996Presentation
Dave Olesen, a pilot and resident of northern Northwest Territories, presents testimony to a BHP Diamond Mine environmental assessment panel recommending approval of the mine while urging the Canadian government to establish and protect large wilderness preserves across the North to balance resource development with environmental conservation.
Development Plans Environmental Agreement Correspondence Water Quality Wildlife Closure & Reclamation
Proposed Tailings Facility, Submission to the Water Technical Session, BHP Diamond Mine Environmental Assessment Panel (GNWT, February 1996)
1 February 1996Regulatory Filing
The Government of Northwest Territories reviews the NWT Diamonds Project Environmental Impact Statement, concluding that frozen core dams are acceptable for the mine site if proper freeboard and construction controls are maintained, but expressing concern that the proposed large tailings facility in Long Lake presents unresolved challenges for long-term erosion control and recommends concentrating tailings in upper watershed areas instead.
Waste Rock Kimberlite Tailings Closure & Reclamation
Public Hearing Presentations, BHP NWT Diamonds Project Environmental Assessment (Gordon Stewart (Braden Burry Expediting Services), January to February 1996)
1 February 1996Presentation
Two presentations to the Environmental Assessment Review Panel: Gordon Stewart (Braden Burry Expediting Services) advocates for the BHP diamond project citing economic benefits, benign mining processes, and successful co-existence of industry and wildlife in Yellowknife; the Yellowknife Chamber of Commerce similarly supports the project emphasizing northern economic benefits across pre-production, early production, and expanded production phases.
Development Plans Wildlife Closure & Reclamation Traditional Knowledge Correspondence
Intervention to the Environmental Assessment Panel Hearings on the BHP NWT Diamonds Project (DIAND, February 1996)
1 February 1996Regulatory Filing
DIAND's formal intervention to the Environmental Assessment Panel regarding the BHP NWT Diamonds Project, addressing regulatory frameworks, environmental management plans, water resources, traditional knowledge, and socio-economic considerations for the proposed diamond mine in the North Slave region.
Development Plans Regulatory Correspondence
Proposed Tailings Facility, Submission to Water Technical Session (GNWT, February 1996)
1 February 1996Regulatory Filing
The Northwest Territories Departments of Renewable Resources and Safety and Public Services submitted a technical review of the proposed NWT Diamonds Project (Ekati) tailings facility design, concluding that frozen core dams are acceptable for the site but recommending modifications to address freeboard adequacy and proposing concentration of tailings in upper watershed areas to reduce long-term erosion risks.
Waste Rock Kimberlite Tailings Closure & Reclamation
Ecological Impact Assessment, Mitigation and Monitoring (GNWT, February 1996)
~1996Regulatory Filing
Approximate date — inferred from filename
This submission by the Government of the Northwest Territories to the BHP Diamond Mine Environmental Assessment Panel addresses deficiencies in ecological impact assessment, mitigation measures, and monitoring programs for the proposed NWT Diamonds Project. The document identifies significant gaps in baseline data, criticizes the adequacy of impact predictions, and recommends development of a comprehensive Environmental Protection Plan with collaborative effects monitoring involving government agencies, Aboriginal groups, and other stakeholders.
Development Plans Wildlife Monitoring
Natural Resources Canada Presentation to the BHP Diamond Mine Environmental Assessment Panel (Natural Resources Canada, February 1996)
1 February 1996Presentation
Natural Resources Canada's presentation to the BHP Diamond Mine Environmental Assessment Panel on February 1, 1996, provides technical review and recommendations on mining design, tailings management, permafrost conditions, waste rock handling, and explosives use for the proposed NWT Diamonds Project. The submission emphasizes the critical importance of careful engineering, monitoring, and contingency planning to manage the unique challenges posed by permafrost terrain and frozen-core dam construction.
Development Plans Waste Rock Closure & Reclamation Traditional Knowledge
Presentation to the Environmental Assessment Panel on BHP Diamonds Inc.'s NWT Diamonds Project (Natural Resources Canada, February 1996)
1 February 1996Presentation
Natural Resources Canada submits technical comments on BHP Diamonds Inc.'s NWT Diamonds Project (Ekati) for an environmental assessment panel, addressing tailings management, permafrost and ground ice issues, waste rock management, explosives handling, and construction monitoring requirements. The submission provides recommendations for frozen-core dam design, tailings deposition, permafrost characterization, and esker extraction to address technical challenges posed by the project's permafrost terrain.
Development Plans Waste Rock Regulatory
Federal Environmental Assessment Panel Public Hearing Transcript, NWT Diamonds Project, Kugluktuk (BHP Billiton, January 1996)
31 January 1996Report
Federal Environmental Assessment Panel public hearing held in Kugluktuk (Coppermine), Northwest Territories on January 31, 1996, reviewing BHP Diamonds Inc.'s proposal to develop a diamond mine near Lac de Gras. The hearing included presentations by the panel, BHP representatives discussing the project's environmental management and socio-economic benefits, and community members raising concerns about waste management, water quality, caribou impacts, employment practices, and social effects on families and communities.
Development Plans Environmental Agreement Water Quality Closure & Reclamation
Presentation to the BHP Diamond Mine Public Hearing (Ernie Bernhardt, Kugluktuk, January 31, 1996)
31 January 1996Presentation
Ernie Bernhardt of Kugluktuk presents concerns about BHP's proposed diamond mine, focusing on potential waste contamination of the Coppermine River and impacts to local food sources, while also questioning long-term employment and community benefits for indigenous peoples and whether the project represents genuine opportunity or minimal work.
Development Plans Traditional Knowledge Water Quality Closure & Reclamation
Presentation on the Proposed BHP Diamond Mine, Kugluktuk (Ernie Bernhardt, January 31, 1996)
31 January 1996Presentation
Ernie Bernhardt from Kugluktak presents concerns about BHP's proposed diamond mine, focusing on waste management impacts to the Coppermine River and local food sources, employment sustainability, and long-term social effects for indigenous communities.
Traditional Knowledge Water Quality Yellowknives Dene Closure & Reclamation
Public Hearing Transcript, Rae-Edzo, Northwest Territories (Multiple parties, January 1996)
25 January 1996Report
Federal Environmental Assessment Panel public hearing in Rae-Edzo on January 25, 1996, reviewing BHP Diamonds Inc.'s proposed diamond mine development in the Lac de Gras area of the Northwest Territories. The hearing included presentations by BHP on the project proposal and environmental studies, followed by community presentations from Dogrib people expressing concerns about land rights, caribou impacts, and demands for a written impact benefits agreement before project approval.
Development Plans Traditional Knowledge Wildlife
Public Hearing Submission Supporting the Ekati (Koala) Diamond Project (Gordon Stewart, Braden Burry Expediting Services Ltd., January 1996)
11 January 1996Presentation
Gordon Stewart, owner of Braden Burry Expediting Services and BHP contractor, presents arguments to a regulatory panel supporting the Ekati (Koala) Diamond Project, emphasizing its economic benefits, environmental manageability, employment opportunities for northerners, and the precedent set by successful mine operations in established communities.
Development Plans Correspondence Wildlife Closure & Reclamation Traditional Knowledge
Notes to the Public Hearings, BHP Environmental Review (Dogrib Nation, January 1996)
~1996Presentation
Approximate date — inferred from filename
This document contains public hearing notes from the Dogrib Nation regarding BHP's diamond mine environmental review, emphasizing Dogrib sovereignty, land rights, traditional knowledge integration, and concerns about environmental and socio-economic impacts, along with government and community profiles of the Dogrib North Slave region.
Traditional Knowledge Development Plans Wildlife Yellowknives Dene
Eskay Creek Mine Acid Rock Drainage (ARD) Case Study (Homestake Canada, 1999)
~1996–2001Report
Case study examining the Eskay Creek gold, silver, and base metal mine's waste management strategies, focusing on acid-generating rock (PAG) disposal options and the selection of underwater disposal in Albino Lake and Big Tom Lake as the optimal mitigation strategy to prevent acid rock drainage and protect receiving environments. The document includes monitoring data for contaminants including antimony, zinc, and total suspended solids from 1994-2000.
Waste Rock Acid Rock Drainage Closure & Reclamation
Environmental Fact Sheet, Equity Division (Placer Dome Canada, 1996)
~1996–2001Report
An environmental fact sheet for the Equity Division (Placer Dome Canada) minesite in central British Columbia, documenting mining operations, geology, waste management systems, acid rock drainage treatment, monitoring programs, and reclamation efforts including waste dump cover design and research.
Waste Rock Acid Rock Drainage Closure & Reclamation
We Can't Eat Diamonds (Rita Blackduck, January 1996)
~1996Letter
Approximate date — inferred from filename
A letter from a Dogrib community member to BHP expressing concerns about unfulfilled promises regarding employment and training, low wages, gender pay inequality, environmental protection, and land restoration following mining operations.
Correspondence Traditional Knowledge Closure & Reclamation

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