TY JOUR TI CONDITION OF THE QUESTION OF PRODUCTION AND OPERATION OF WOODEN FLOPS FOR MANWAYS USED IN MINING PROCESSES KW JO Forestry Engineering Journal AU Burmistrova, O.N. AU Mikheevskaya, M.A. AU Miheevskiy, E.V. PY 2018 IS 8 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov