Studies of methane inflow from longwall floor into the mine atmosphere Alexander Kobylkin, Sergey Kubrin, Dmitry Meshcheryakov, Evgeny Pozdeev and Iosif Zakorshmennyi E3S Web Conf., 548 (2024) 08023 Published online: 12 July 2024 DOI: 10.1051/e3sconf/202454808023