Moisture as assessment criterion for coal rank and coal layers hazardous characteristics manifestationVadym Tarasov, Mykola Antoshchenko, Olha Zakharova, Anastasiia Zakharova and Oleg LevadnyiE3S Web Conf., 280 (2021) 08019DOI: https://doi.org/10.1051/e3sconf/202128008019