Home / Standards / GB/T 29162-2012 GB/T 29162-2012 Active Classification of gangue 煤矸石分类 Standard Type GBT ICS 27.010 CCS F10 Status 现行 Issue Date 2012-12-31 Implementation 2013-10-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A