The first paper reporting our project looking at the Swedish hillfort vitrified material has been published online.
http://www.witpress.com/elibrary/sdp-volumes/11/6/1388
Sjöblom, R., J. Weaver, D. Peeler, J. McCloy, A.A. Kruger, E. Ogenhall, and E. Hjärthner-Holdar, “Vitrified Hillforts As Anthropogenic Analogues For Nuclear Waste Glasses – Project Planning And Initiation,” International Journal of Sustainable Development, 11(6), 897-906 (2016).