NAWG News and Events

NAWG-16 - register now!

NAWG-16 will be held in Yamagata, Japan (Zao Onsen) on 15-18 October, 2019. Three days of discussion will be followed by a one-day field trip to a new NA site, so why not join us in October? Please see the announcement and registration form or contact Russell Alexander (This email address is being protected from spambots. You need JavaScript enabled to view it.) for further details.

document Announcement of the 16th NAWG Workshop (718 KB)

document Registration: NAWG-16 (300 KB)

New publication by a NAWG member

Tony Milodowski and his co-authors have described the salinity and redox evolution in a deep coastal groundwater system. The results indicate long-term stability in a deep hydrochemical system despite repeated glaciations and associated sea level changes throughout the Quaternary.

The document can be found in our document library, or downloaded directly pdf here (3.86 MB) . pdf
(3.86 MB)

Publication by a NAWG member

The results of a new approach to examine long-term physical changes in bentonite properties has just been published as part of the Geosciences journal Special Issue on Geological Disposal of High Level Radioactive Waste - The Relationship between Engineered and Natural Barriers.

The document can be found in our document library, or downloaded directly here : pdf Alexander et al 2017 LPB long term behaviour of bentonite Geosciences (5.87 MB)

Meetings of interest

The below listed conferences and workshops may contain items of relevance to natural analogue studies:


The European Commission is co-organising FISA 2019 and EURADWASTE ’19 conferences with the Ministry of Research and Innovation of Romania and the Institute for Nuclear Research (RATEN ICN) under the auspices of the Romanian Presidency of the Council of the European Union in 2019, with the objectives:

  • To present progress and key achievements of some 90 projects carried out, since the previous conference edition in 2013, as part of the 7th and Horizon 2020 Euratom Research and Training Framework Programmes (FP)
  • To stimulate discussions on the state of play of R&D, key challenges addressed at national, European and international levels on research and innovation policies, synergies and partnerships, and future perspectives.
  • To address the latest EC proposal for a new Framework Programme for Research and Innovation for the period 2021-27, ‘Horizon Europe’ and ‘Euratom Research and Training’ programme


Euroclay is amongst the foremost scientific meetings in the field of clays and clay minerals, and upholds the tradition of presenting every four years, the latest cutting-edge results of this scientific field. EUROCLAY 2019 will be held at Pierre & Marie Curie University (UPMC) in the center of Paris, 1st-5th July 2019, and will be organized by the French Clay Group (GFA), under the auspices of ECGA and AIPEA. It will consist of scientific and technical sessions with both oral and poster presentations, arranged around four main themes, namely:

  • Crystallography, mineralogy and modelling
  • Environment and geological processes
  • Resources, energy, storage
  • Functionalized clays and archeology

New NA project in Japan

The International Bentonite Longevity (IBL) project was launched at the kick-off meeting on 22-23 May, 2019 in Sagae-shi in Japan. The project was introduced at the NAWG-15 workshop in Prague and the Clay Conference in Davos in 2017 (see the pdf presentation (2.21 MB) ). For future updates follow the website at

For further details contact Russell Alexander (This email address is being protected from spambots. You need JavaScript enabled to view it.) or Heini Reijonen (This email address is being protected from spambots. You need JavaScript enabled to view it.).


The bentonite beds exposed in the rived bed at Tsukinono site.

Potential interaction of alkali leachates on repository performance

Posiva, Finland, have recently released a new assessment of the potential impact of alkali, cementitious leachates from their L/ILW repository on their SF repository. The new study, Posiva Working Report 2017-03 (which can be downloaded here), builds on information from several NA studies, including work in Jordan (Maqarin) and Northern Ireland (Scawt Hill). See also Posiva Working Report 2007-35 (here) and SKB Report 12-17 (here).


NAWG-15 completed, on to NAWG-16 next

NAWG-15 is now over and we now look forward to NAWG-16. Although several potential locations are under discussion, no decision has been reached yet, but be assured that we shall make an announcement in the near future.

The NAWG-15 proceedings will be available as a SURAO technical report within a few short months. Please keep checking here for further updates.

The presentations from NAWG-15 can be downloaded here : NAWG 15 : 2017, Czech Republic.