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The Geological Survey Community and Digital Twins, a work in progress


Matt is the programme strategy director for data and information systems at the French Geological Survey, BRGM, based in Orléans France. In this and his previous position as Director of Informatics at the British Geological Survey, Matt brings a depth of experience in the application of geospatial data to subsurface challenges, leading in developing new approaches in Europe and in collaboration across the world.

With 20 years of professional experience, Matt has worked as a digital specialist and geoscientist across the marine and coastal, natural hazard, energy and mineral extraction domains, on projects and initiatives for Governments, academia and industry.

Water-rock interactions in clay-rich materials


Christophe Tournassat is a Professor at the University of Orléans, at the Institut des Sciences de la Terre d’Orléans (ISTO, France), and a Visiting Faculty in the Energy Geosciences Division, Earth and Environmental Sciences Area at Lawrence Berkeley Laboratory (LBNL, USA). Christophe Tournassat holds B.Sc. and M.Sc. degrees in Earth Sciences from the Ecole Normale Supérieure de Lyon, a Ph.D. in Environmental Geochemistry from the University of Grenoble, and an "Habilitation à diriger des recherches" in Geology from the University of Nantes, France. Christophe Tournassat has been working for more than twenty years on scientific issues related to radioactive waste storage, first as an Andra Ph.D. fellow, then as a scientist at BRGM and LBNL, and now at the University of Orléans and LBNL. His scientific interest covers a range of topics from thermodynamics and kinetics of low temperature water/solutes/rock interactions to multi-scale numerical modeling of retention and transfer processes in geological media. He co-develops, with Carl Steefel, the code CrunchClay, which can simulate biogeochemical reactions coupled with non-Fickian/non-Darcian transport processes occurring in nanoporous media such as clay rocks and cementitious materials. Christophe Tournassat is associate editor of Geochimica et Cosmochimica Acta, and is member of the editorial board of Applied Clay science.

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The role of clays in radionuclide retention from Nuclear Waste repositories. Scientific challenges from the safety assessment perspective.


Jordi Bruno has a PhD in Inorganic Chemistry, Royal Institute of Technology (KTH), Stockholm, an Executive MBA from Stanford University and has over 35 years of experience in the field of nuclear waste management, risk analysis and environmental management strategies.

From 2008 to 2021, he was the CEO and Chairman of the Board of Amphos 21 Consulting and from 2009 to 2021, he was the CEO and Chairman of the Board of Amphos 21 Group. From 2000 to 2014 he was Director of the Chair Enresa-Amphos 21 on Sustainability and Waste Management in the Universitat Politècnica de Catalunya (UPC). Since the inception of Amphos 21 in RSK Environmental he is Director of Amphos 21 Group and Business Development Director for Nuclear and Mining

He is author or co-author of more than 130 published papers and five books, as well as many communications to international conferences and technical reports.

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