Environmental Monitoring of the Coal Cluster in Transition to Sustainable Development Eva Scherbenko, Eyvaz Gasanov, Maxim Tyulenev, Sergey Kovalevsky, Radim Rybár and Leonid Lopukhinsky E3S Web Conf., 278 (2021) 02005 Published online: 29 June 2021 DOI: 10.1051/e3sconf/202127802005