Teodora Nemska-Dosheva
Ministry of Energy of the Republic of Bulgaria
Pavel Kavina
Ministry of Industry and Trade of the Czech Republic
Juan Ruiz Quintana
Ministry of Energy and Mines of the Republic of Cuba
Piotr Dziadzio
Ministry of Climate and Environment of Poland
Maksim Kirzhimanov
Ministry of Natural Resources and Environment of the Russian Federation
Dušan Kúšik
State Geological Institute of Dionyz Stur, Government of Slovakia