TY JOUR TI DUST-EXPLOSION PROTECTION OF EXCAVATIONS OF COAL MINES: MERITS AND DEMERITS, WAYS OF IMPROVEMENT KW inert dust KW rock dusting KW dust-explosion protection KW explosion KW maximum pressure of explosion KW coal dust KW pressure rise speed at explosion KW aerosol KW deflagratsionny burning KW a detonation JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Rodionov, V.A. AU Magomet, R.D. AU Dementev, F.A. PY 2019 IS 2019 PB Saint-Petersburg University of State Fire Service of Emercom of Russia