Home / Standards / GB/T 43761-2024 GB/T 43761-2024 Active Calculation methods for utilization rate of coal gangue 煤矸石利用率计算方法 Standard Type GBT ICS 73.040 CCS D20 Status 现行 Issue Date 2024-03-15 Implementation 2024-10-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A