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821 documents · Page 28 of 42

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Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1998)
1998Report
1998 Waste Rock Seepage Survey results for the Ekati Diamond Mine, transmitted by BHP Diamonds Inc. (November 12 1998) to Red Pedersen, Chairman, Independent Environmental Monitoring Agency, with INAC-South Mackenzie District fax to Peter McCart. Tables 3-2, 3-3, 3-4 report SEEP-002-98, SEEP-003-98, SEEP-004-98 seepage station results at the east toe of the Panda Till Dump and 700 m / 1 km downstream, with field parameters (pH, temperature) and grab/average chemistry vs. criteria for June and September 1998 sampling.
Waste Rock Water Quality Monitoring Regulatory
Toxicity of Inorganic Nitrogen Compounds to Aquatic Organisms, A Review (P. McCart, November 1998)
~1998Report
Approximate date — inferred from filename
A literature review examining the toxicity of inorganic nitrogen compounds (nitrate, nitrite, and ammonia) to aquatic organisms, with emphasis on factors influencing toxicity such as dissolved oxygen, pH, temperature, and species sensitivity, particularly in the context of mining operations using nitrogen-based explosives.
Aquatics Water Quality Fish Habitat
Ekati, Canada's First Diamond Mine, Special Grand Opening Edition (News/North, October 1998)
12 October 1998Report
This special newspaper edition celebrates the grand opening of Ekati Diamond Mine on October 14, 1998, Canada's first operational diamond mine, highlighting its construction completion on budget at $700 million, employment of 440 staff with aboriginal hiring preference, and comprehensive environmental monitoring program in the Lac de Gras area near Yellowknife.
Development Plans Monitoring Closure & Reclamation Wildlife Water Quality
Ekati Canada's First Diamond Mine, Grand Opening Special Edition (News/North, October 1998)
12 October 1998Report
A special newspaper edition celebrating the grand opening of Ekati, Canada's first diamond mine, on October 14, 1998, operated by BHP Diamonds Inc. and Dia Met Minerals. The document contains extensive congratulatory messages from northern suppliers and service providers, articles detailing the mine's operations, environmental practices, employment of northern and aboriginal workers, telecommunications infrastructure, and the 25-year development history of the project near Lac de Gras in the Northwest Territories.
Development Plans Exploration Closure & Reclamation Wildlife Water Quality
Critical Technical Review of BHP Tailings Characterization Study & Wastewater and Tailings Management Plan, Ekati Diamond Mine (Chris Mills, September 1998)
1 September 1998Report
A critical technical review by Chris Mills of BHP Diamonds Inc.'s tailings characterization study and wastewater/tailings management plan for the Ekati Diamond Mine, prepared for IEMA in September 1998. The review examines changes to mill design producing finer tailings (nominally minus 500 µm) and assesses associated impacts on water quality, tailings behaviour, and Long Lake impoundment management.
Waste Rock Kimberlite Tailings Wastewater
Characterization of Kimberlite Toxicity to Aquatic Life Forms (HydroQual, August 1998)
11 August 1998Report
HydroQual Laboratories conducted a comprehensive toxicity characterization of Fox and Panda kimberlite from BHP Diamonds Inc.'s diamond mining operations in the Northwest Territories, testing effects on multiple freshwater organisms and assessing sublethal health impacts on juvenile rainbow trout exposed to kimberlite suspensions over 30 days.
Aquatics Aquatic Effects Monitoring (AEMP)Water Quality
Guidelines for Metal Leaching and Acid Rock Drainage (ML/ARD) at Minesites in British Columbia (BC Ministry of Energy and Mines, August 1998)
1 August 1998Report
British Columbia Ministry of Energy and Mines guidelines for predicting, preventing, and mitigating metal leaching and acid rock drainage (ML/ARD) at minesites, establishing a phased approach to characterization, prediction, and mitigation strategies including underwater storage, blending, covers, and drainage treatment.
Acid Rock Drainage Waste Rock Geochemistry
Guidelines for Metal Leaching and Acid Rock Drainage at Minesites in British Columbia (BC Ministry of Energy and Mines, August 1998)
1 August 1998Report
British Columbia Ministry of Energy and Mines guidelines document providing comprehensive requirements and best practices for predicting, preventing, and mitigating metal leaching and acid rock drainage at mining sites, including prediction methodologies, mitigation strategies, and regulatory frameworks.
Acid Rock Drainage Waste Rock Geochemistry
Waste Rock & Ore Storage Management Plan, Ekati Diamond Mine, Revision 2 (BHP Billiton, July 1998)
31 July 1998Report
BHP Diamonds Inc. submitted a Waste Rock and Ore Storage Management Plan for the Ekati Diamond Mine detailing geochemical characterization, testing methodologies, water quality predictions, and mitigation strategies for managing drainage from waste rock and ore storage facilities at four kimberlite pipes (Panda, Koala, Misery, and Fox) in the Northwest Territories.
Waste Rock Acid Rock Drainage Geochemistry
Diamond Watch Newsletter, Volume 1 Number 1 (Canadian Arctic Resources Committee, July 1998)
14 July 1998Report
Diamond Watch newsletter reports on diamond exploration developments in the Northwest Territories, including the Diavik Project environmental assessment timeline and BHP's potential restructuring of its World Minerals division, along with the first report from the Ekati Mine Independent Environmental Monitoring Agency containing recommendations on environmental monitoring and management practices.
Monitoring Development Plans Environmental Agreement Water Quality Waste Rock Wildlife
Histopathological, Endocrine & Immunological Assessment of Rainbow Trout Exposed to Kimberlite Ore Tailings (GLOBALTOX, July 1998)
6 July 1998Report
This multi-part final report documents a dose-response study of rainbow trout exposed to kimberlite ore tailings at 50 and 500 mg/L concentrations over 15 and 30 days, assessing histopathological changes in gills, liver and kidney, serum hormone levels (cortisol, estradiol, testosterone), and immunological parameters including phagocytic function and lymphoproliferation. The studies collectively demonstrate that kimberlite exposure caused adverse effects at all tested concentrations, with LOEC/LOAEC estimated below 50 mg/L, and immunomodulatory effects dependent on dose and exposure duration.
Aquatics Kimberlite Tailings Waste Rock
Policy for Metal Leaching and Acid Rock Drainage at Minesites in British Columbia (BC Ministry of Energy and Mines & Ministry of Environment, Lands and Parks, July 1998)
1 July 1998Report
This British Columbia policy establishes regulatory requirements and guiding principles for managing metal leaching and acid rock drainage (ML/ARD) at minesites. It prescribes a three-step prediction and mitigation process and outlines various strategies including avoidance, underwater storage, covers, blending, and drainage collection and treatment.
Acid Rock Drainage Waste Rock Geochemistry
Lac de Gras Drainage Basin Study (DIAND, June 1998)
26 June 1998Report
A hydrological study commissioned by DIAND and conducted in July 1997 with Lutsel K'e and Yellowknives Dene First Nations to investigate whether water flows from Lac de Gras southward into the Aylmer Lake-Lockhart River system, concluding that there is no surface outflow from Lac de Gras to the south based on aerial and ground surveys of the drainage divide.
Traditional Knowledge Yellowknives Dene Water Quality
Compliance Report, Class 'A' Water Licence N7L2-1616, Ekati Diamond Mine (BHP Billiton, June 1998)
1 June 1998Report
This 1997 compliance report evaluates BHP Diamonds Inc.'s adherence to water licence N7L2-1616 for the Ekati Diamond Mine, documenting dewatering of multiple lakes, water use volumes, waste management plans, surveillance network monitoring, and 19 inspections with findings on water quality exceedances, spills, and remediation efforts throughout the year. The licensee's overall compliance is deemed satisfactory despite instances of non-compliance with effluent quality standards and delays in submitting required management plans.
Regulatory Water Licence Water Quality
BHP Tailings Characterization Study, Panda & Fox Kimberlite Tailings, Ekati Diamond Mine (EBA Engineering, June 1998)
1 June 1998Report
This tailings characterization study documents the physical and chemical properties of Panda and Fox kimberlite tailings from the Ekati Diamond Mine, including effects of polymer treatment, thickening processes, and thermal behaviour to support tailings disposal facility design and operations at Long Lake.
Kimberlite Tailings Waste Rock Geochemistry Development Plans
Lac de Gras Drainage Basin Study (DIAND, June 1998)
1998Report
Lac de Gras Drainage Basin Study by Bob Reid (DIAND Water Resources), Fred Sangris (Yellowknives Dene First Nation, Dettah) and Lawrence Catholique (Lutsel K'e Dene First Nation), June 1998. Transmitted to David Milburn, Manager Water Resources Division, INAC Yellowknife (PO Box 1500). Documents ground-survey heights-of-land near Thonokied Lake / MacKay Lake (64°21'N 110°00'W) on eskers, winter-road portage Site 3 with Echo Bay road camp, and Site 4 ground survey northwest of Seahorse Lake with Yellowknives Dene representatives. Appendix 4 contains Yellowknives Dene First Nation comments (Box 2514 Yellowknife).
Traditional Knowledge Yellowknives Dene Monitoring Regulatory
Wastewater and Tailings Management Plan, Ekati Diamond Mine (EBA Engineering, June 1998)
1 June 1998Report
This is the Wastewater and Tailings Management Plan for the Ekati Diamond Mine, detailing the handling and disposal of all mine-related wastewater and 133 million tonnes of tailings over 25 years of operation. The plan describes tailings discharge into Long Lake Containment Area cells, water treatment processes, pit dewatering, sewage treatment, and monitoring protocols required under Northwest Territories Water License N7L2-1616.
Wastewater Kimberlite Tailings Waste Rock
Wastewater and Tailings Management Plan, Ekati Diamond Mine (EBA Engineering, June 1998)
1 June 1998Report
This wastewater and tailings management plan for the Ekati Diamond Mine details the handling of 133 million tonnes of mine tailings over 25 years of operation, including tailings disposal in Long Lake containment area cells, water treatment and discharge protocols, pit water management, and camp sewage systems. The plan addresses tailings characterization, consolidation behavior, seasonal deposition patterns, and monitoring requirements to ensure compliance with water license conditions.
Wastewater Waste Rock Kimberlite Tailings
Wastewater and Tailings Management Plan, Ekati Diamond Mine (EBA Engineering, June 1998)
1 June 1998Report
This wastewater and tailings management plan for the Ekati Diamond Mine describes comprehensive strategies for handling 133 million tonnes of tailings over 25 years of operation, including tailings containment in Long Lake cells, water treatment, pit dewatering, camp sewage management, and monitoring protocols to ensure compliance with NWT water licence requirements.
Wastewater Waste Rock Kimberlite Tailings
Annual Report to Parliament on Administration and Enforcement of the Fish Habitat Protection and Pollution Prevention Provisions of the Fisheries Act, 1996 to 1997 (DFO, May 1998)
4 May 1998Report
This annual report to Parliament details the administration and enforcement of fish habitat protection and pollution prevention provisions of the Fisheries Act for fiscal year 1996-97, including policy issues regarding habitat delegation to provinces, operational reviews of major development projects, and conviction statistics across Canada.
Fish Habitat Regulatory Water Quality Correspondence

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821 documents · Page 28 of 42