ACG Is the Future Filtered? Paste and Thickened Tailings Short Course

20 September 2021 | Esplanade Hotel, Fremantle, Western Australia


Drawing on experiences from operational filtered tailings facilities, the short course will discuss available technologies, appropriate test programmes to determine relevant design parameters, operational challenges, and cost comparisons.
This short course was held in South Africa in May 2019, attended by 114 people.  We look forward to presenting the updated course alongside the 24th International Conference on Paste, Thickened and Filtered Tailings.
This course will be held as a traditional physical event in Perth, Western Australia, COVID-19 permitting, as well as an online event.

For up-to-date information, visit

View the list of attending companies here.

Short Course Facilitator


Professor Andy Fourie
Professor of Civil & Mining Engineering and Program Director – Future Tails
The University of Western Australia

Andy is a professor in the Department of Civil, Environmental and Mining Engineering at The University of Western Australia in Perth. He has a bachelor’s and master’s degree from the University of the Witwatersrand in South Africa, and a PhD from the Imperial College, University of London. He has worked at the University of Queensland and the University of the Witwatersrand. He has been a visiting professor at the University of Alberta, the Catholic University of Valparaiso in Chile and the University of Colorado in Boulder. His research is in the field of mitigating the impact of mining and municipal solid waste disposal. Outcomes from his research have been incorporated in changes to environmental legislation in South Africa. He contributed to a series of guidelines for managing mine tailings in Australia, as well as developing a document for the International Atomic Energy Association on barrier systems for retaining uranium mining waste. Andy has been involved in many industry-focussed projects with current projects including An Evaluation of Tailings Storage Facilities Monitoring Technologies managed by AMIRA and funded by eight mining companies; Future Tails aimed at training, research and education to improve tailings management funded by BHP and Rio Tinto; and Evaluating Potential Static Liquefaction of Tailings to Prevent Failures, funded by six mining companies as well as the Australian Research Council. Andy is also currently a member of five international tailings review boards.

Collaborating Organisations

Course Program*

08:30 Welcome and introduction Professor Andy Fourie, The University of Western Australia
09:00 Evaluation of material properties to enable the selection of appropriate filter technology Jason Hamelehle, Paterson & Cook, USA
09:45 Harnessing the benefits Richard Martindale, SRK Consulting, UK
11:00 Design versus field performance Colleen Crystal, SRK Consulting, USA
11:45 Tailings – the inevitable variable Guido Görres, Metso Outotec
12:30 Open discussion: Choosing the most appropriate filtration technology All
13:00 LUNCH
14:00 The 2016 failure of a red mud filter stack in Luoyang, China Dr David Reid, The University of Western Australia
14:45 Filtered (‘dry-stack’) TSFs: strength and structural zone at the design stage Joe Rola, SRK Consulting
16:00 Establishing an independent, global tailings management institution Dr David Cooling, Consultant
16:30 Open discussion: Geotechnical considerations – testing and field verification All

*Program is subject to change



Dr David Cooling


David joined Alcoa in 1981 as a graduate engineer after completing a bachelor’s degree in civil engineering at The University of Western Australia. He has since completed a master’s degree in applied science with Curtin University, researching the consolidation behaviour of the fine grained bauxite tailings, and a PhD with Melbourne University on improving the sustainability of bauxite residue management.
David has held various positions with Alcoa including operational, strategic planning, and research roles. More recently, he was the global refining residue governance and technical manager with responsibilities that covered Alcoa’s impoundments across all operations.

David retired from Alcoa in March of 2021 and has since been doing part-time consulting, including a role with the United Nations Environment Programme (UNEP), assisting with the development of the Global Tailings Management Institute.

Colleen Crystal
Principal Consultant
SRK Consulting, USA 


Colleen, PEng, is a principal consultant with SRK with over 23 years of experience in geotechnical engineering and seismic analysis and design for earthen embankments, landfills, mine-waste tailings and waste rock facilities and water retention dams. Colleen is the geotechnical lead for the siting, design, construction and operations of several recent filter-pressed dry-stack storage facilities in high seismic risk areas, including the El Escobal silver mine in Guatemala and the Buritica Gold Mine in Medellin, Colombia. For these and other waste management facilities she has managed the preparation of PFS/FS and trade-off studies as well as providing detailed design plans and specifications, surface water management plans, OMS manuals, risk assessments and risk management plans in conformance with current international standards of good practice.

Guido Görres
Product and Business Development Manager

Metso Outotec


Guido has almost 20 years’ experience in the mining and metallurgical industries, in roles including testwork, flowsheet development, and filter manufacturing. Guido holds a degree in process engineering and has worked on projects around the globe including Australia, Europe, South America, Africa, and Asia. Previous roles include global business development, specialising in iron ore, ferro chrome, coal and tailings facility process and plant developments. Guido now leads Metso Outotec’s global product group for FFP pressure filters, with a particular focus on tailings solutions.


Jason Hamelehle
Process Engineer
Paterson & Cooke, USA


Jason is a process design engineer with over 10 years’ experience focusing on tailings dewatering. His experience ranges from test work design, process audits, process design and optimization, and research with a focus on tailings filtration. Jason has worked on projects in North America, South America, and Australia. Before entering the mining industry, Jason spent time researching particle surface chemistry as it relates to nanotechnology.

Richard Martindale
Principal Geotechnical Engineer
SRK Consulting, UK


Richard is a chartered engineer with significant practical experience in design, analysis, evaluation, and construction of geotechnical structures including slopes, retention dams, foundations, and lining systems. Richard specialises in assessment and design of rock and soil slopes, numerical modelling, design and management of ground investigations, design and management of ground performance monitoring schemes, technical due diligence, and audits of slopes and waste storage facilities for project evaluation, technical performance, and regulatory compliance.He is also experienced in providing expert witness services to insurers and lawyers in relation to his areas of specialisation. Richard has worked on base, precious-metal, coal, and industrial mineral projects throughout the UK, Europe, Africa, South America, and North America.

Dr David Reid
Research Fellow
The University of Western Australia


David is a tailings engineer with 16 years of consulting and research experience in the design, laboratory testing, and analysis of tailings and tailings storage facilities. He is primarily involved in laboratory and in situ characterisation of tailings with respect to their strength, consolidation behaviour, and liquefaction susceptibility. David completed a PhD at UWA on the behaviour of polymer-treated tailings. He has worked at UWA since 2017 as a research fellow on the ARC Linkage project TAILLIQ and more recently on the Future Tails project.

Joe Rola
Principal Consultant (Mine Waste)
SRK Consulting


​Joe is a consulting civil/geotechnical engineer with over 15 years’ experience, concentrating on mine and power generation waste projects. He has been involved in a wide variety of projects from the concept stage through to detailed design, construction, operations and closure across Australia, as well as in Asia and Canada. Joe predominantly focusses on design/analyses, construction support and field/laboratory investigations.