Home / Standards / MT 235-1991 MT 235-1991 Abolished 立井多绳罐笼平衡锤 Standard Type MT23 ICS N/A CCS N/A Status Abolished Issue Date 1991-02-02 Implementation 1991-04-30 Centralized Committee 国家矿山安全监察局 Issuing Authority 国家矿山安全监察局