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mine gas
mine gas, Total:9 items.
In the international standard classification, mine gas involves: Occupational safety. Industrial hygiene, Graphical symbols, Astronomy. Geodesy. Geography.
Professional Standard-Safe Production, mine gas
Professional Standard - Energy, mine gas
- NB/T 11168-2023 Technical specifications for drilling holes and hole protection for underground gas drainage in coal mines
- NB/T 11169-2023 Technical specifications for long borehole directional drilling for underground gas drainage in coal mines
- NB/T 11167-2023 Technical specifications for solid-phase particle sealing of boreholes for gas drainage in coal mines
- NB/T 11125-2023 Code for design of hydraulic fracturing technology scheme for underground gas drainage holes in coal mines
Professional Standard - Coal, mine gas
- MT 5018-1996 Code of design of the gas drainage engineering of coal mine