The Groundwork


ATC Williams Line-up Announcement

26th International Conference on Paste, Thickened and Filtered Tailings
16 – 18 April 2024, Pullman Melbourne on the Park, Melbourne, Australia


ATC Williams is excited to announce our participation in the 26th Annual Paste Conference, which is always a highly anticipated event in our annual calendar.


This year, we are proud to partner as a major sponsor. The conference will be held in Melbourne, so a large cohort of our talented staff will be able to attend and present. Be sure to find our booth and say hello.


We have been fortunate to attend and present at several PASTE conferences. Dr. Behnam Pirouz and Dr. Sadegh Javadi were at PASTE 2023, held in beautiful Banff in Canada, and both will be attending again in Melbourne.


We profile our headlining Melbourne PASTE team below:



Western Australian Operations Manager, Senior Principal Engineer


PRESENTATION TITLE: The Place for Filtered Tailings in the Search for Safe and Sustainable Tailings Management


Nelson is a technical and operations leader with over 30 years of experience across various engineering disciplines, specialising in project management, infrastructure design, and tailings engineering in the global resources sector. He is recognised for his expertise in filtered tailings stacking and has taken the leading role in groundbreaking initiatives, including the world’s largest tailings filtration and stacking operation.


Nelson has worked for prominent companies such as Karara Mining, BHP and GHD, contributing significantly to the field through research, engineering design, planning, and operations management. He is leading our Western Australia team as operations manager.




PRESENTER – Arash Roshdieh

International Operations Manager, Senior Principal Engineer


PAPER TITLE 1: Ultra paste and central thickened discharge: a paradigm shift in tailings management
A Roshdieh, K Seddon, B Pirouz, S Javadi Rudd, P Williams


PAPER TITLE 2: Central thickened discharge scheme for Ma’aden’s Mansourah-Massarah Gold project
A Roshdieh, FC Soo, ATC Williams, Australia; K Zare Al Ahmadi, A Ibnu Hamdani, A Putra Ginting, R Gonzales Valdestamon, Ma’aden, Kingdom of Saudi Arabia; S Javadi Rudd, M Sadeghipour, ATC Williams, Australia.


Arash serves as a Senior Principal Engineer at ATC Williams, Australia, bringing over 27 years of industry experience to the table. With a focus on tailings and water engineering, he holds chartered status and has been instrumental in projects spanning tailings and water management, transportation, water resources management, and hydrological/hydraulic studies.


Over his two-decade tenure at ATC Williams, Arash has led numerous initiatives locally and internationally, showcasing his expertise in tailings and water management. His commitment to advancing knowledge in the field is evident through his authorship or co-authorship of more than 19 publications.





Principal Engineer


Genevieve, a practising geotechnical engineer with 23 years of experience, specialises in tailings and water storage facility planning and design. A chartered engineer and fellow of Engineers Australia, she is renowned for her leadership in civil and geotechnical engineering, with a background in both consulting and mining.


Genevieve is actively involved in the ANCOLD Tailings Working Group and has provided engineer-of-record services for the past three years. Her expertise spans geotechnical site investigation, embankment design, risk assessment, and governance, among other areas critical to facility safety and performance








Dr Behnam Pirouz

Senior Principal Engineer


Dr. Pirouz is a civil-hydraulic engineer with over 26 years of experience in the design of mine tailings and water infrastructures. Through PhD research sponsored by ATC Williams, he developed a design method for predicting thickened tailings beach slopes.


Benham’s areas of expertise include the design of tailings storage facilities and water management systems for mines, design of non-Newtonian slurry transport systems, tailings and water dambreak analysis, design of thickened tailings disposal schemes, laboratory testing, fluid mechanics and measurement techniques, pilot plant testing and undertaking experimental and theoretical research works.





Dr Sadegh Javadi Rudd

Slurry and Mechanical Service Area Lead, Principal Engineer


Dr Javadi leads the Slurry and Mechanical Services Group at ATC Williams. He specialises in thickened tailings characterisation transport and distribution systems and is a highly regarded presenter in this area. In March 2013, Sadegh joined us while completing his PhD on non-Newtonian thickened slurry flow sponsored by ATC Williams.


Sadegh is a process engineer with over 20 years of experience in tailings dewatering (thickeners, cyclones, and filters), tailings pipe and open channel transport engineering, pipe loop and rheological testing and interpretation, and project management.





Dr Behrooz Ghahreman-Nejad

Chief Technical Officer, Senior Principal Engineer


Behrooz currently leads the Tailings Management technical community at ATC Williams and has over 30 years of experience as a consultant, researcher, and educator in the civil, geotechnical and mining engineering fields with significant emphasis on geotechnical and water management aspects of tailings retaining structures.


Dr Ghahreman Nejad is also an Honorary Senior Fellow at the Department of Infrastructure Engineering at the University of Melbourne. His research expertise encompasses the application of a comprehensive range of experimental (physical) and theoretical (numerical) modelling techniques in geomechanics. Behrooz has authored and co-authored numerous technical publications and lectures on the geotechnical engineering of dams.




Keith Seddon

Senior Principal Engineer


Keith has over 40 years of experience in geotechnical engineering and tailings management. His expertise covers all aspects of mine tailings disposal, including conventional tailings, thickened and paste tailings, and co-disposal.


Work components include site selection and options studies, life of mine planning, feasibility studies, investigation and tailings characterisation, design and permitting, assistance with construction and commissioning, surveillance and performance reviews, closure and rehabilitation, and independent third-party reviews and auditing. Projects have been undertaken throughout Australia and in the Asia/Pacific region, Central Asia, South America, and Europe.


Keith has extensive experience in dams and hydraulic structures, hydrogeology investigations and slope stability assessment.



Early bird registration ends 1 March 2024.

PASTE 2024 Registrations


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