2020 Workshop

The 2020 Workshop was virtual and took place on December 2 and 3. Sessions included challenges and best practices, pit lakes, extreme sulphide self-heating, First Nation perspective and performance of waste rock dumps. Attendance was 700. Registration was $50. Canadian university students and British Columbia First Nations and community volunteers could register for free. Past presentations are perhaps the world’s best source of case study information and visual technical guidance on a wide spectrum of ML/ARD topics. The ML/ARD Workshop wishes to acknowledge GeoEnviroPro for their assistance in providing technical support for the virtual sessions (https://geoenviropro.com/)

Photo: Lower Mine Yard, Former Sullivan Mine, Kimberley, BC; courtesy of Teck Metals.

Proceedings:

Wels C., P. Kuranov, A. Trapp, P. Ferguson, M. Miller, A. Bhabra and S. Jensen. Down-Valley Seepage Interception System, Rose Creek Valley, Faro Mine Remediation Project. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: collection dam Faro hydrology tailings impoundment tracer treatment
Peterson R., S. Humphries and D. Schneider. Overcoming Challenges in Long-term Groundwater Interception. Lower Mine Yard, Former Sullivan Mine, Kimberley, BC. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: collection hydrology maintenance Sullivan treatment waste rock

Supporting Documents:
1. Hydrogeological assessment for mitigation of groundwater discharge to a creek in a confined valley: part 1 of 2 case study from the former Sullivan mine, Kimberley, BC. BC Technical and Research Committee on Reclamation: 42nd Annual Mine Reclamation Symposium
  Humphries S.A. and R. Peterson
2. Innovative design and deep trench excavation for a groundwater collection improvement project: part 2 of 2 case study from the former Sullivan Mine, Kimberley BC, BC. Technical and Research Committee on Reclamation: 42nd Annual Mine Reclamation Symposium. https://open.library.ubc.ca/cIRcle/collectio
  Schneider D.R. and R. Peterson
Jones K. Approaches Needed to Address the Challenges Associated with Water Balance Water Quality Modelling. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: hydrology model monitoring prediction
Ma L., Z-S. Liu, E. Dy, K. Tufa, J-Q. Zhou, E. Fisher, C. Huang and K.A. Morin. Additional Mechanisms and Measurements to Improve ARD/ML Prediction. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP gas hydrology kinetic test model prediction scale up temperature
Jamieson H., A. Cleaver, P. Huntsman, C. Rickwood and A. Bailey. Windblown Tailings Dust as a Source of Metal to Surface Water. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP arsenic drainage chemistry Giant mineralogy roaster Stirling tailings wind-erosion

Supporting Documents:
1. Characterization of Tailings Dust from Two Abandoned Mine Sites: Effects on Nearby Surface Waters and Evaluation of Dust Sampling Methods. MSc thesis, Queen’s University (Supervisors H.E. Jamieson and P. Huntsman)
  Cleaver A.
2. Characterization of Arsenic-hosting Solid Phases in Giant Mine Tailings and Tailings Dust. MSc thesis, Queen’s University (Supervisor H.E. Jamieson)
  Bailey A.
Raghav M. Freeport-McMoRan Case Studies in Best Practices for Acid Rock Drainage Management (Freeport-McMoRan external communications group does not allow presentations to be archived/posted on conference websites). 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020
Gammons C. Improvements to the Water Quality of the Acidic Berkeley Pit Lake. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: Berkeley drainage chemistry human health lime metal recovery monitoring pit lake treatment
Martin A.J., S. Salvador, D. Dunbar, C. Fraser, S. Mueller and N. Eriksson. Pit Lake Modelling and Management at the Aitik Mine, Sweden. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: Aitik bentonite closure cover drainage chemistry hydrology model pit lake soil treatment waste rock
Castendyk D., J. Ogilvie and J. Faithful. Experience Using Aerial Drones for Pit Lake Water Sampling and Quarterly Monitoring. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: drainage chemistry human health monitoring pit lake sampling Thompson Creek
Nesset J.E. and F. Rosenblum. Basics of Self-heating of Sulphide Mineral Mixtures. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP Brunswick concentrate gas human health kinetic test Louvicourt mineralogy NP particle size prediction Red Dog Sullivan tailings temperature underground waste rock
Nesset J.E., J. Gibson and D. Dobney. Field Examples and Mitigation Strategies for Sulphide Mixtures with a High Risk of Self-heating. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP concentrate desulphurize encapsulation gas kinetic test lignosulphonate lime mitigation monitoring paste prediction Raglan Red Dog tailings temperature underground waste rock
Birkham T. and M. O’Kane. Case Studies to Ignite Your Understanding of Combusting Waste Rock Management and Controls. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP backfill deposition encapsulation gas kinetic test layering mitigation monitoring particle size prediction segregation temperature waste rock wind-erosion
Bear C., M. Lapointe, R. Freed, G. Farah and A. Schein. Addressing Mine Water Discharges at the Endako Mine: A Collaboration with the Community, ENV and Centerra. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: discharge Endako First Nation receiving environment regulation sulphate water management
Bao Z., J. Bain, S.P. Holland, D. Wilson, P. MacKenzie, C.J. Ptacek and D.W. Blowes. Faro Waste Rock Project: An Integrated Study of Hydrological and Geochemical Processes in Sulfide- and Carbonate-rich Waste-Rock Dumps. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: drainage chemistry Faro gas geology hydrology isotope mineralogy prediction temperature waste rock
Vriens B. and R. Beckie. Investigation of Waste Rock Weathering and Drainage: Multiscale Field Study at the Antamina Mine, Peru. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: Antamina AP drainage chemistry geology hydrology kinetic test lag time mineralogy PAG prediction waste rock

Supporting Documents:
1. Long-term monitoring of waste-rock weathering at the Antamina mine, Peru
  Vriens B., H. Peterson, L. Laurenzic, L. Smith, C. Aranda, K. Ulrich Mayer and R.D. Beckie
2. A selection of papers that came out of the Antamina program in the last 3 years:
  Various authors
Vriens B. and R. Beckie. Mechanisms Controlling Circumneutral Drainage Generation at the Antamina Mine, Peru. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: Antamina arsenic drainage chemistry geology kinetic tests mineralogy neutral pH prediction selenium waste rock

Supporting Documents:
1. Mobilization of Metal(oid) Oxyanions through Circumneutral Mine Waste-Rock Drainage
  Vriens B., E.K. Skierszkan, M. St-Arnault, K. Salzsauler, C. Aranda, K. Ulrich Mayer and R.D. Beckie
Meiers G. Case Study of the Influence of Shorter Tips in Mine Rock Storage on Internal Air Flow Capacity. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: drainage chemistry gas hydrology particle size soil barrier temperature waste rock
Pearce S., D. Brookshaw, K. Grohs, M. Orr, Y. Kalua and H. Purnamasari. Practically Achieving Zero Oxygen Conditions: Field Data Collected during Construction of an Integrated Waste Storage Facility at the Martabe Mine. 27th Annual BC MEND Metal Leaching/Acid Rock Drainage Workshop. Vancouver, BC. December 2 & 3, 2020

KEYWORDS: AP dam dry cover erosion gas layering Martabe monitoring revegetation rock cover waste rock

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