GB/T 31089-2014

Active

Computation and requirement of recovery ratio of coal mine

煤矿回采率计算方法及要求

Standard Type
GBT
ICS
73.040
CCS
D20
Status
现行
Issue Date
2014-12-22
Implementation
2015-06-01
Responsible Dept
中国煤炭工业协会
Drafting Unit
N/A