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BHP Diamonds Inc. newsletter for June 2001 reporting on the BHP-Billiton merger completion, operational achievements at Ekati including 90-day safety milestone and winter production success, recreational facility expansions, university research partnerships on environmental issues, and various employee and community updates.
BHP Diamonds Inc. newsletter for June 2001 reporting on the merger of BHP and Billiton, operational achievements including 90-day lost time accident milestone, recreation facility expansions, university-supported environmental research projects, security improvements in the Process Plant, and various employee recognition and development programs at the Ekati Diamond Mine.
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.
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.
The Mackenzie Valley Land and Water Board responds to DIAND's concerns regarding Water License N7L2-1616 for BHP Diamonds Inc., addressing procedural issues with the Technical Advisory Committee policy and clarifying that agencies like DIAND may participate in both public hearings and TAC processes. The Board affirms its intention to resolve technical issues through a fair and transparent TAC process.
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.
This preliminary screening report documents BHP Diamonds Inc.'s application to the Department of Fisheries and Oceans for authorization to develop Desperation and Carrie Ponds as part of the Misery Pit waste rock storage facility at Ekati Diamond Mine. The report quantifies fish habitat losses (0.587 weighted habitat units) and proposes compensatory enhancements to other water bodies to achieve no net loss of fish productivity.
BHP presentation on the 2000 Enhanced Monitoring and Confirmation Plan for the Panda Waste Rock Storage Area at Ekati Diamond Mine, detailing waste rock characterization, seepage chemistry assessment, and hydrological investigations to address regulatory concerns about low pH seepage from mining operations.
This geochemical review by the Minesite Drainage Assessment Group evaluates BHP and SRK's 2000 seepage survey data from the Ekati Diamond Mine, finding that acid rock drainage (ARD) is more extensive and severe than reported—affecting approximately 26-27% of seep analyses rather than only one documented seep—and is migrating through the shallow groundwater system toward Beartooth and Bearclaw Lakes. The report identifies significant gaps in the SRK classification system, contradictions in interpretations, data gaps, and equipment failures, recommending comprehensive individual seep characterization, groundwater monitoring, water treatment, and retention of qualified technical specialists to manage the serious and worsening water-quality problems.
BHP Diamonds Inc.'s Environmental Agreement Annual Report for 2000 documents the company's environmental monitoring programs and operational activities at the Ekati Diamond Mine in the Northwest Territories, covering air quality, water quality, waste management, wildlife impacts, reclamation efforts, and archaeological investigations conducted during the year.
This 2000 seepage and waste rock survey report documents BHP's expanded monitoring program investigating unexpectedly low pH seepage from the Panda Waste Rock Storage Area at Ekati Diamond Mine, examining potential causes including naturally acidic precipitation, organic decomposition, waste rock breakdown, and sulphide mineral oxidation. The study found three types of seeps with varying pH levels and identified that most seeps pose low toxicity risk to aquatic organisms, though one strongly acidic seep may be affected by sulphide mineral oxidation in carbonate-depleted kimberlite.
This 2000 seepage and waste rock survey report documents BHP Diamonds' investigation into acidic seepage detected from the Panda waste rock storage area at Ekati Diamond Mine, fulfilling requirements of Water Licence N7L2-1616. The expanded monitoring program tested multiple hypotheses for low pH seepage including precipitation acidity, organic decomposition, sulphide mineral oxidation, and ammonia oxidation, with results indicating that low pH is primarily due to natural acidic precipitation and plant decomposition, with one seep showing evidence of sulphide mineral oxidation but overall low toxicity risk to aquatic organisms.
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.
This annual report documents a comprehensive study on stabilizing processed kimberlite tailings at Ekati Diamond Mine through vegetation reclamation using various soil amendments. The research combines greenhouse and field components evaluating amendment combinations including peat, lake sediment, sewage sludge, and calcium sources to improve plant growth on the serpentine tailings at Long Lake Containment Facility.
Sable, Pigeon and Beartooth (SPB) Binder 3 for the Ekati Diamond Mine BHP Billiton Diamonds Inc. development application (2001-2002). Includes regulatory-phase Tab 1: BHPB's reply to final written submissions on the SPB public hearing (Jim Excell BHP June 18 2002 to Melody McLeod MVLWB), MVLWB workplan correspondence (Laurie Cordell, David Livingstone DIAND, Red Pedersen Agency), Sable Pipe geochemistry (host rock almost entirely granite with small biotite-schist and diabase-dyke components, granite waste rock kimberlite ore), site plan layouts with PROAPE pit and waste piles, and dust-suppression water usage 100,000 m³/yr from Falcon (with GNWT RWED's Laurie Bruno (MVLWB Regulatory Officer) correspondence June 2001).
News Clippings, Transcripts and Media Releases binder for the Ekati Diamond Mine (1996-2004). Includes CBC Special Report October 7 2004 "Diamond Mines take More Environmentally Responsible Approach", News/North Business Briefs June 11 2001 "BHP-Billiton merger approved" (potential $10 billion petroleum business divestiture speculation), Robin Staples / Zabey Nevitt / Kevin O'Reilly internal IEMA forwarded news clippings, "BHP Diamonds Inc. is the operator" investor materials on Dia Met's continued global diamond exploration program, and Yellowknifer (January 5 2001) review of nine recommendations on the Agency responsible for Ekati environmental monitoring.
Chronology of regulatory correspondence and approvals (January 2001–August 2003) documenting the dewatering of Fox Lake at Ekati Diamond Mine, including water license amendments, management plan approvals, and disputes over the classification and discharge of Fox pit water into Long Lake Containment Facility Cell D.
BHP Billiton's Environmental Agreement Annual Report for 2001 details the company's environmental monitoring and management activities at the Ekati Diamond Mine in the Northwest Territories, covering air quality, water monitoring, wildlife effects, fish habitat, archaeological protection, and progressive reclamation programs conducted under its Type A Water Licence and Environmental Agreement with Canadian and NWT governments.
This comprehensive federal assessment examines nitrogen and phosphorus sources, pathways, and environmental impacts across Canadian air, water, and soil ecosystems, concluding that anthropogenic nutrient loading has caused demonstrable ecological and human health problems including eutrophication, water contamination, and atmospheric pollution.
A comprehensive reclamation liability estimate for the Sable, Pigeon, and Beartooth pit additions and the broader Ekati Diamond Mine, detailing estimated costs across multiple liability units (camp facilities, operations, open pits, tailings cells, waste rock storage, monitoring) projected for 2001, 2005, 2010, and 2014 with confidence intervals (10th percentile, median, and 90th percentile estimates).