00644naa#a2200181#i#450# EN\\bibl\99966 20250627050417.5 2686-7788 20250624b2025####ek#y0engy0150####ca RU THE USE OF LOCAL RAW MATERIALS FOR THE PRODUCTION OF PROPANTS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2025 3 с. Journal article local Горное дело. 622 Scherbin Sergey Anatol'evich Evdokimenko Dmitriy Sergeevich angtu.editorum.ru