Conference Program
Monday, November 10 – Short Course
07:00-18:30
Registration / information desk hours
08:00-18:30
Short Course: Geotechnical and Civil Design of Heap Leach Pads*
Presented by: Renzo Ayala, Anddes Asociados, Peru; Jonathan Bray, University of California at Berkeley, USA;
Denys Parra, Anddes Asociados, Peru; and Mark Smith, RRD International Corp and Brazilian Nickel, USA
*Short course is not included in the conference registration. To participate in this course you must complete a separate
registration.
Tuesday, November 11
08:00-08:30
Speakers’ and session chairs’ meeting
08:00-17:30
Registration / information desk hours
10:00-19:30
Trade show hours
Opening Session
Chair: Igor Gonzáles Galindo, Cia. Minas Buenaventura, Hudbay Minerals, and Sierra Metals, Peru
09:00-09:15
Welcome and Introduction
Dirk van Zyl, University of British Columbia and InfoMine, Canada
09:15-09:30
Opening Address
Raúl Benavides Ganoza, Compañía de Minas Buenaventura, Peru
09:30-10:30
KEYNOTE 1: Heap Leach Development: Achieving the Correct Conceptual Design Part II
Randolph Scheffel, Consulting Metallurgical Engineer, USA
10:30-11:00
Coffee break
Plenary Session 1: Heap Leach Projects
Chair: Dirk van Zyl, University of British Columbia and InfoMine, Canada
11:00-11:30
New Developments in Heap Leaching Monitoring, Control and Modelling Tools and Techniques
Yousef Ghorbani, Universidad Católica del Norte, Chile
11:30-12:00
Kişladağ Gold Mine Heap Leach Facility
Veli Gökdere, H. Nejat Utkucu, Jale Sakiyan Ates and Omer Kahraman, Tüprag Metal Madencilik San. Tic. A.Ş,
Turkey
12:00-12:30
Coming in from the Cold: The Advancement of Heap Leach Projects in Northern Climates
Mark Ayranto, Victoria Gold, Canada
Lunch
12:30-13:30
Parallel Sessions
Session 1: Leach Pad Costing and Ore Stacking
Session 2: Modeling and Closure
Chair: Jennifer Leinart, InfoMine, USA
13:30-13:55
Leach Pad Cost Benchmarking
Mark Smith, RDD International, USA; Denys
Parra, Anddes Asociados, Peru
Chair: Michael Milczarek, GeoSystems Analysis, USA
Utilizing CFD Technology to Capture Multidimensional
Thermal-Fluid-Reactive Phenomena in a Heap Leach
Operation
Diane McBride, Swansea University, UK; Jim Gebhardt,
FLSmidth, USA; Mark Cross, Swansea University, UK
13:55-14:20
A Procedure to Estimate the Differences in
Heap Leaching Costs Brought about through
Variations in Climate and Terrain
Scott Stebbins, Aventurine Engineering, USA
Conceptual Cover System Design for Heap Leach Closure
Lindsay Tallon, Mike O'Kane, and Brian Ayres, O'Kane
Consultants, Canada
14:20-14:45
Leach Pad Equipment for Greater Production
Karl Ingmarsson, Sandvik Mining Systems, USA
The Application of Unsaturated Soil Mechanics to Heap
Leach Analysis
Jason Stianson and Delwyn G. Fredlund, Golder Associates,
Canada
14:45-15:10
Design Considerations for Mobile Stacking
Conveyors for Challenging Terrain and Climate
Conditions
Grant Graber and Ron Kelly, Terra Nova
Technologies, USA
The Design and Water Balance of Precious Metal Heap
Leach Projects under Extreme Rainfall Variation Using
METSIM ®
Calvin Morrison, Matjhabeng Management and Technology
Consulting, South Africa; Ashraf Jaffer Tenova Bateman,
South Africa and Alex Holtzapple, Proware, USA
15:10-15:40
Coffee break
Parallel Sessions
Session 3: Drain Systems under High Loads
Session 4: Mineral Processing
Chair: Mark Harris, GSE Environmental, USA
15:40-16:05
Geomembrane and Pipe Design Issues in
Deeper Heap Leach Pads
Denys Parra, Carlos César and Javier Mendoza,
Anddes Asociados, Peru
Chair: David Arcos, Amphos 21 Consulting, Spain
Characterization of Ore Crushed by High Pressure Grinding
Rolls (HPGR) and Cone Crusher for Heap Leaching
Sanaz Moghadam-Zadeh and Dirk van Zyl, UBC, Canada
16:05-16:30
Performance of Heap Leach Drainage Pipes
under High Loads
Claudio Roman and Ignacio Atucha, AMEC,
Chile. Presented by Humberto Preciado,
AMEC, Peru
Characterization of Gold Inventory and Impediments to
Recovery at an Active Heap Leach Facility
Jason Keller and Michael Milczarek, GeoSystems Analysis,
USA; Scott Olsen and Isaac Amponsah, Barrick Gold, USA
16:30-16:55
3-D/2-D Comparative Flow Analysis in Heap
Leach Drain Systems with two Different
Overliner Materials
Nicolas Echeverria and David Romo, Ausenco,
Chile; Ivan Suazo, Heap Leach consultant, Chile
Secondary Recovery of a Copper Heap Leach
Dale Rucker and Shawn Calendine, hydroGEOPHYSICS, USA
16:55-17:20
Geotechnical Characterization of Ore Stacking
in Andean Heap Leach Pads
José Ale, John Dixon, Frank Pérez and
Humberto Preciado, AMEC Environment and
Infrastructure, Peru; Martín Rodriguez,
Ausenco, Peru
On-Line Control of Ferric Ion in SX-EW Circuits Using a
Polarization Voltage Method
Hugo Guevara and David Ramírez, Sociedad Minera Cerro
Verde, Peru
17:30-19:30
Welcome reception in the trade show area
19:30
Close Day 1
Wednesday, November 12
08:00-08:30
08:00-16:40
Speakers’ and session chairs’ meeting
Registration / information desk hours
09:00-16:40
Trade show hours
Opening Session
08:45-09:00
Welcome Address
Augusto Chung, Rio Alto Mining, Peru
Plenary session 2: Keynote and Peruvian Case Study
Chair: Augusto Chung, Rio Alto Mining, Peru
09:00-10:00 KEYNOTE 2: Why Heap Leach Nickel Laterites?
Anne Oxley and Mark Smith, Alyssum Ventures and Brazilian Nickel, USA
10:00-10:30
Investigation, Monitoring and Assessment of a Valley-Fill Leach Pad Deformation
Michael Shelbourn, Barrick Gold Corporation, USA
10:30-11:00
Coffee break
Plenary session 3: Geotechnical and Peruvian Case Study
Chair: Guillermo Barreda, Knight Piésold Consultores, Peru
11:00-11:30
3-D Slope Stability Analysis of Heap Leach Pads Using the Limit Equilibrium Method
Andrés Reyes, Pilar Garma and Denys Parra, Anddes Asociados, Peru
11:30-12:00
Relevance of Hydro-Geomechanical-Geochemical Processes in the Design and Management of Copper Heap
Leach Pads
David Arcos, Albert Nardi, Gabriela Roman-Ross, Orlando Silva and Jorge Molinero, Amphos 21 Consulting,
Spain; Jordi Guimerà, Amphos 21 Consulting, Chile; Eduardo Ruiz, Amphos 21 Consulting, Peru; Denys Parra,
Anddes Asociados, Peru
12:00-12:30
Optimization and Costs Reduction of Heap Leaching at La Zanja Mine
Freddy Motta Rodríguez and Eddy Rodríguez Gonzales, Compañía de Minas Buenaventura, Peru
Lunch
12:30-13:30
Session 5: Liners
Chair: Denys Parra, Anddes Asociados, Peru
13:30-13:55
Bituminous Geomembrane in Heap Leach Pads
Juan Lazaro, Axter Coletanche, Chile; Bernard Breul, Axter Coletanche, France
13:55-14:20
Use of Premium HDPE Liners in Heap Leach Applications
Mathieu Cornellier, Solmax International, Canada; Daniel Tan, Solmax International, Malaysia
14:20-14:45
Evaluation and Quality Control of Geosynthetic Clay Liners in Heap Leach Pads
Hilda Garay, Javier Mendoza, Carlos Cesar and Ernesto Najar, Anddes Asociados, Peru
14:45-15:15
Coffee break
Session 6: Regulatory and Products
Chair: Dirk van Zyl, University of British Columbia and InfoMine, Canada
15:15-15:40
Heap Leaching Technique in Mining within the Context of Best Available Techniques (BATs)
Caner Zanbak, Turkish Miners Association, Turkish Chemical Manufacturers Association, Turkey
15:40-15:55
New Applications of BASF Chemical Technologies in Gold Leaching Process, for Prevention and Remedial the
Scale Processes, Mainly to Avoid the Crystallization of Calcareous Components
Rommel Solis, BASF, Peru
15:55-16:10
Innovative Geosynthetic Solutions for Heap Leach Pads
Mark Harris and Mauricio Ossa, GSE Environmental, USA
16:10-16:25
Smart Wireless Improves Lixiviation Performance Monitoring at Barrick Zaldivar
Hugo Barrientos and José Antonio Larraín, Emerson Process Management, Chile
16:25-16:40
The Story of a Bituminous Geomembrane over 40 years
Juan Lázaro and Ramon Rojas, Axter Coletanche, Chile; Natalie Daly, Axter Coletanche, USA; Bernard Breul, Axter
Coletanche, France
18:00-21:00
Conference dinner at Casa Clark
Note: Conference registration fee does not include the dinner function. You must purchase a separate ticket
for the dinner. Buses will leave from JW Marriott Hotel at 18:00 sharp.
21:00
Close Day 2
Thursday, November 13
08:00-08:30
Speakers’ and session chairs’ meeting
08:00-17:40
09:00-17:40
Registration desk hours
Trade show hours
Plenary session 4: Keynote and Project De-Risking
Chair: Guillermo Canchis, Sociedad Minera Cierro Verde, Peru
09:00-10:00
KEYNOTE 3: Stockpile Leaching at Freeport-McMoRan – Meeting the Challenges
Larry Todd, Freeport-McMoRan, USA
10:00-10:30
De-Risking Heap Leach Projects
Stephen Grocott, Rio Tinto, Australia
10:30-11:00
Coffee break
Plenary session 5: Processing
Chair: José Ale, AMEC Environment and Infrastructure, Peru
11:00-11:30
Integrated Process Control to Enhance Heap Leach Performance
Amado Guzmán-Guzmán, HydroGeoSense, USA; Omar Cáceres Hernández, Rio Tinto, USA; Rajesh Srivastava,
Indian Institute of Technology Kanpur, India; Jay Jones, Environmental Navigation Services, USA
11:30-12:00
Optimization of the Permeability of Uranium Ores for Heap Leaching
Nicolas Durupt, Jean-Jacques Blanvillain and Philippe Dubois, Areva Mines, France
12:00-12:30
Lagunas Norte: Process Optimization Efforts
Pedro Bobadilla and Joe Pezo, Barrick, Peru
12:30-13:30
Lunch
Session 7: Geotechnics
Chair: Michael Shelbourn, Barrick Gold Corporation, USA
13:30-13:55
Elastic Characterization of Sandstone Run of Mine Ore Stacking in Heap Leach Pads
Frank Pérez, José Ale and Humberto Preciado, AMEC Environment and Infrastructure, Peru; Claudio Roman,
AMEC Environment and Infrastructure, Chile
13:55-14:20
Heap Leach Pads – The Importance of Proper Testing, Interpretation and Analysis of Soil Liner Geomembrane
Interface
Guillermo Barreda and Luis Chahua, Knight Piésold Consultores, Peru
14:20-14:45
Interface Shear Strength Non Linearity and its Effects on Heap Leach Pad Stability Analysis
Renzo Ayala and Waldo Huallanca, Anddes Asociados, Peru
14:45-15:10
Seismic Response Analysis and Seismic Induced Permanent Displacement Calculation on Heap Leach Pads
Renzo Ayala, Keith Pérez and Jesús Negrón, Anddes Asociados, Peru
15:10-15:40
Coffee break
Session 8: Continuous Improvement
Chair: Yousef Ghorbani, Universidad Católica del Norte, Chile
15:40-16:05
Maximizing Productivity in Heap Leach Pads through Dipole Electrical Leak Location
Silverio Prota, Anddes Argentina, Argentina; Denys Parra, Anddes Asociados, Peru; Abigail Beck, TRI
Environmental, USA
16:05-16:30
Permanent Heap Leach Phreatic Level Characterization with the Aid of CPTu Soundings
Arnaldo Saavedra, Sociedad Minera Cerro Verde, Peru
16:30-16:55
Heap Leach Irrigation Systems Automation in Lagunas Norte Mine
Leoncio Chavez, Barrick, Peru
16:55-17:20
Gold Production: Kinetics Models and Applications
Joe Pezo and Ricardo Guerrero, Barrick, Peru
17:20-17:30
Closing remarks and conference balance
Dirk van Zyl, University of British Columbia and InfoMine, Canada and Igor Gonzáles Galindo, Cia. Minas
Buenaventura, Hudbay Minerals, and Sierra Metals, Peru
17:30-17:40
Heap Leach 2015 presentation
Dirk van Zyl, University of British Columbia and InfoMine, Canada
POSTER PRESENTATION
Column Leaching of Rare Earth Elements from a Black Shale
Rory Cameron, Sean Langley, Yves Thibault and Rolando Rastra, CanmetMINING, Natural Resources Canada, Canada