Home / Standards / GB/T 23561.1-2009 GB/T 23561.1-2009 Abolished Methods for determining the physical and mechanical properties of coal and rock - Part 1: General requirements for sampling 煤和岩石物理力学性质测定方法 第1部分：采样一般规定 Standard Type GBT ICS 73.010 CCS D04 Status 废止 Issue Date 2009-04-08 Implementation 2009-12-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A