Home / Standards / MT 297.1-1992 MT 297.1-1992 Active 高炉喷吹用阳泉矿务局煤技术条件 Standard Type MT29 ICS N/A CCS N/A Status Active Issue Date 1992-05-07 Implementation 1992-12-01 Centralized Committee 国家矿山安全监察局 Issuing Authority 国家矿山安全监察局