TY JOUR TI TO THE QUESTION OF PROTECTION OF PERSONNEL FROM HARMFUL SUBSTANCES IN THE PRODUCTION OF COKE AND PETROLEUM BITUMEN KW harmful substances KW personal protective equipment JO Modern Technologies and Scientific and Technological Progress AU Lenok, S.I. AU Pankov, V.A. PY 2022 IS 2021 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»