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1. Development and implementation of active and combined support types for sections of mine workings exposed to bearing pressure
2. Substantiation and selection of parameters for supporting mine workings at deep levels
3. EXPERIENCE IN THE USE OF SELF-PROPELLED DRILLING RIGS TO INCREASE THE EFFICIENCY OF DRILLING AND BLASTING OPERATIONS WITH SUBLEVEL MINING SYSTEMS
4. ON THE STATE OF INDUSTRIAL INJURIES OF WORKERS IN INDUSTRIAL ENTERPRISES OF THE AKTUBINSK REGION
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