As part of the just transition of the Upper Nitra region in Slovakia, the Office of the Deputy Prime Minister of the Slovak Republic for Investments and Informatisation has collected project concept notes since 2018. One of the projects, proposed by HUTIRA Slovakia, Ltd., would secure funding for the ‘thermochemical processing’ of tyres in the region. This briefing provides a summary of an independent assessment of the thermal depolymerisation technology proposed by HUTIRA Slovakia, Ltd. in 2015 and 2016 for a similar project. It covers toxic substances, the availability of secondary raw material, sustainable alternatives, greenhouse gas emissions and other aspects. Its conclusions indicate that thermal depolymerisation projects should not be part of Upper Nitra’s just transition.