Home / Standards / GB 47291-2026 GB 47291-2026 Upcoming Technical requirements for coal mine compressed air self-rescue system 煤矿压风自救系统技术要求 Standard Type GB ICS 13.340 CCS D09 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 国家矿山安监局 Drafting Unit N/A