A concept to use energy of air flows of technogenic area of mining enterprises Edgar Cabana, Volodymyr Falshtynskyi, Pavlo Saik, Vasyl Lozynskyi and Roman Dychkovskyi E3S Web Conf., 60 (2018) 00004 Published online: 16 October 2018 DOI: 10.1051/e3sconf/20186000004