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129 documents · Page 5 of 7

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Panda Waste Rock Storage Area, Beartooth Bearclaw Drainage, 2000 Seepage and Waste Rock Survey Report, Ekati Diamond Mine (SRK Consulting, February 2001)
1 February 2001Report
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.
Waste Rock Acid Rock Drainage Geochemistry Aquatics
Panda Waste Rock Storage Area, Beartooth Bearclaw Drainage, 2000 Seepage and Waste Rock Survey Report, Ekati Diamond Mine (SRK Consulting, February 2001)
1 February 2001Report
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.
Waste Rock Acid Rock Drainage 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
Processed Kimberlite Tailings Reclamation, Annual Report, Ekati Diamond Mine (BHP Billiton, January 2001)
19 January 2001Report
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.
Closure & Reclamation Revegetation Kimberlite Tailings Monitoring
Processed Kimberlite Tailings Reclamation Research Program, 2000 Annual Report, Ekati Diamond Mine (BHP Billiton, December 2000)
1 December 2000Report
This 2000 annual report documents BHP Diamonds' Processed Kimberlite Tailings Reclamation Research Program at the Ekati Diamond Mine, detailing three field studies (Soil Amendment, Revegetation, and Species Trials) established in Cell B of Long Lake Containment Facility to develop effective techniques for revegetating processed kimberlite tailings. The report presents baseline soil chemistry data, study design rationale, construction methods, monitoring protocols, and first-year results from revegetation research using various soil amendments and native grass species.
Closure & Reclamation Revegetation Kimberlite Tailings
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 2000)
2000Report
BHP Diamonds Inc. 2000 Waste Rock Storage Area Seepage Survey "Book #15" — transmittal November 21 2000 from Jim Millard (BHP Environmental) to Melody MacLeod, Mackenzie Valley Land and Water Board, with monthly reports from June-September 2000. Includes Enviro-Test QC Report Workorder L11659 (Edmonton) chemistry for Aluminum, Arsenic, Barium, Beryllium, Nickel, Lead, Antimony, Selenium, Titanium, Chromium, Copper, Iron, Manganese, Molybdenum with detection limits and Relative Percent Differences (RPD), and Mike Tanguay BHP analytical request forms.
Waste Rock Geochemistry Monitoring
Preliminary Data & Status, Waste Rock Seepage Study (BHP Billiton, October 2000)
31 October 2000Report
BHP Diamonds Inc. submits preliminary seepage monitoring data and status update for September 2000 from the Panda Waste Rock Storage Area adjacent to Beartooth and Bearclaw Lakes, in response to Mackenzie Valley Land and Water Board requirements. The report documents seepage flows observed at monitoring stations, tundra reference stations, bioassay results, and geochemical investigations with attached preliminary analytical certificates from Enviro-Test Laboratories.
Waste Rock Monitoring Water Quality
Waste Rock Storage Area Seepage Survey Records, Ekati Diamond Mine (BHP Billiton, April 2000)
19 October 2000Presentation
This document comprises a faxed technical presentation by Kevin Morin reviewing BHP's 1999 waste rock seepage survey results at Ekati Diamond Mine, with conclusions that acid mine drainage is forming and may be increasing in severity, plus preliminary August 2000 seepage monitoring data showing acidic pH and elevated sulfate concentrations at multiple monitoring stations.
Waste Rock Geochemistry Acid Rock Drainage
Preliminary Data and Status for Waste Rock Seepage Study, June 2000 (BHP Billiton, July 2000)
6 July 2000Report
BHP Diamonds Inc. submitted preliminary seepage monitoring data and status update for June 2000 to the Mackenzie Valley Land and Water Board, documenting water quality analyses from seepage monitoring stations at the Panda Waste Rock Storage Area and reference tundra stations. The report indicates confirmed seepage flows from the waste rock pile were not identified during June due to dry conditions following snowmelt, with analytical results for major ions, metals, and other water quality parameters from multiple monitoring and reference locations.
Waste Rock Water Quality Monitoring
Spring Waste Rock Storage Area Seepage Survey Case File, Ekati Diamond Mine (BHP Billiton, July to August 2000)
2000Report
BHP Diamonds Inc. Spring 2000 Waste Rock Storage Area Seepage Survey Report submitted to the Mackenzie Valley Land and Water Board (Melody Macleod), under Water Licence Application NFL2-1616, August 9 2000. Includes ENVIRO-TEST Chemical Analysis lab reports (Edmonton) of seepage samples for sulfate (SO4 — 2180 mg/L peak), total suspended solids, turbidity, pH, conductivity, total alkalinity, ammonia-N, nitrate, uranium (U), vanadium (V), zinc (Zn), and other metals, plus an Enhanced Monitoring and Confirmation Plan emphasizing sulphide content tracking in the Panda pit.
Waste Rock Geochemistry Water Quality
Waste Rock & Ore Storage Management Plan and Wastewater & Processed Kimberlite Management Plan, Ekati Diamond Mine (BHP Billiton, February 2000)
1 February 2000Report
This document is the Waste Rock and Ore Storage Management Plan for the Ekati Diamond Mine, detailing the characterization, geochemical testing, and management strategies for mine waste rock, ore storage, and drainage from four kimberlite pipes (Panda, Koala, Misery, and Fox) scheduled for sequential mining between 1997 and 2014. The plan includes rock type geology, results of geochemical testing, water quality predictions, waste management strategies, and monitoring protocols required under the Type A Water Licence.
Waste Rock Acid Rock Drainage Geochemistry
Waste Rock and Waste Rock Storage Area Seepage Survey Case File, Ekati Diamond Mine (WLWB, 2000 to 2008)
2000–2008Report
Waste Rock Seepage Survey binder for the Ekati Diamond Mine (BHP Billiton Diamonds Inc., later under Wek'èezhìi and Mackenzie Valley Land and Water Board oversight) covering 1999–2008. Includes annual spring/summer seepage survey reports, BHPB correspondence (Laura Tyler, Jim Millard, David Scott, Brent Murphy, Sarah Baines), MVLWB/WLWB correspondence (Violet Camsell-Blondin, Ryan Fequet, Sevanna), 2005 EIR (Environmental Impact Review) technical meetings, ICRP (Interim Closure and Reclamation Plan) Terms of Reference, 2006 Water and Processed Kimberlite Management Plan (WPKMP), Surveillance Network Program non-compliance correspondence (Red Pederson Agency / John Witteman BHP), and Water Licence MV2003L2-0013 documents.
Waste Rock Water Quality Regulatory Geochemistry
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey "Book #10" — transmittal November 17 1999 to Gordon Wray, Chairman, NWT Water Board. Same survey as "#13 1999" with additional appendix material: Appendix A Test Methodologies (ETL EnviroTest sub-contracted labs in Edmonton, Calgary, Saskatoon, Thunder Bay, Winnipeg, Grande Prairie; analytical methods for Beryllium, Boron, Cadmium, Calcium, Chromium, Cobalt, Copper, Iron, Sulphate by Ion Chromatography), and weekly leachate test results from February-October 1995 (pH, acidity/alkalinity as CaCO3, conductivity, sulphate SO4) on the Panda waste rock pile draining to Beartooth Lake, with pH-below-6.0 trigger threshold for seepage controls.
Waste Rock Geochemistry Water Quality
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1999)
1999Report
BHP Diamonds Inc. 1999 Waste Rock Area Seepage Survey transmittal letter (November 17 1999) and report to Gordon Wray, Chairman, NWT Water Board (Yellowknife). File reference 1616. Discusses the Panda waste rock pile drainage into Beartooth Lake, pH-6.0 trigger threshold for initiating seepage controls, and includes ETL EnviroTest (Edmonton/Calgary) Chain of Custody analytical reports with chemistry results for seepage samples.
Waste Rock Water Quality Monitoring Geochemistry
Petrographic Analysis, Tailings & Backfill Samples (Norecol, Dames & Moore, November 1999)
1 November 1999Report
Petrographic and scanning electron microscopy analysis of tailings and backfill samples from a mining operation, documenting mineral composition, texture, sulfide assemblages, and grain size distributions.
Waste Rock Geochemistry Acid Rock Drainage Kimberlite Tailings Monitoring
Operational Material Characterization and Monitoring of Weathering at Huckleberry (Huckleberry Mines Ltd., October 1999)
27 October 1999Presentation
Huckleberry Mines Ltd. presents operational material characterization and weathering monitoring procedures for their porphyry copper deposit, including ARD assessment of waste rock types, daily digging plans based on NPR and copper grade classification, and integrated water quality and materials handling monitoring protocols.
Waste Rock Acid Rock Drainage Geochemistry Development Plans
Waste Rock Storage Area Seepage Survey Correspondence, Ekati Diamond Mine (MVLWB, October 1999 to June 2002)
1999Report
2001 Rock Storage Area Seepage and Waste Rock Survey Report binder for the Ekati Diamond Mine (BHP Billiton). Includes correspondence with the Mackenzie Valley Land and Water Board (MVLWB — Laurie Cordell, Melody MacLeod), BHPB responses (Jim Millard, David Scott, Brent Murphy), 2001 Aquatic Effects Monitoring Program refinements, Panda and Misery seepage monitoring station maps and locations (SEEP-001 through SEEP-083 — Cujo Lake, Thinner Lake, King Pond Dam, Beartooth Lake, Bearclaw Lake, Beartooth waste rock storage area, Coarse Kimberlite Storage Area), and recommendations for granite vs. kimberlite seepage monitoring frequency.
Waste Rock Geochemistry Monitoring
Duthie Mine Acid Rock Drainage Case Study (Silver Standard Resources, June 1999)
24 June 1999Report
A comprehensive case study and historical inventory of the Duthie Mine in British Columbia, documenting its operational history from 1908 to 1988, mining production records, geological characteristics, tailings management, and water quality monitoring efforts. The document includes detailed MINFILE records of ore grades, commodity recoveries, and reclamation activities spanning multiple decades of ownership and operation.
Waste Rock Water Quality Closure & Reclamation Development Plans Monitoring Geochemistry
Review of Cover Design Technologies for the Reclamation of Tailings (G. Ward Wilson, University of Saskatchewan, 1999)
~1999Report
Approximate date — inferred from filename
This technical paper reviews cover design technologies for tailings reclamation across four distinct climate regimes (arid, temperate, high rainfall, and tropical monsoon) using numerical soil-atmosphere modeling. The analysis demonstrates that no single cover system design is universally applicable and that climate parameters, soil properties, and site-specific conditions must be integrated to achieve effective tailings containment and oxidation prevention.
Closure & Reclamation Waste Rock Acid Rock Drainage Kimberlite Tailings
Waste Rock Storage Area Seepage Survey, Ekati Diamond Mine (BHP Billiton, November 1998)
1 November 1998Report
This 1998 waste rock storage area seepage survey documents monitoring of five seepage stations (SEEP001-98 through SEEP005-98) at the Ekati Diamond Mine, conducted in accordance with Water License N7L2-1616 requirements. The report presents field measurements and laboratory analysis of seepage quality from granitic waste rock and till dumps, with key findings showing elevated ammonia and aluminum concentrations at some stations, and recommendations for continued monitoring and improved quality assurance procedures in 1999.
Waste Rock Geochemistry Water Quality

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129 documents · Page 5 of 7