Studying the features of the implementation of underground coal gasification technology in terms of Lvivvuhillia SEPavlo Saik, Roman Dychkovskyi, Vasyl Lozynskyi, Volodymyr Falshtynskyi, Edgar Cabana and Leonid HrytsenkoE3S Web Conf., 168 (2020) 00036DOI: https://doi.org/10.1051/e3sconf/202016800036