HG/T 22809-1997
Code for design of underground mining in chemical mines (English Version)

Standard No.

HG/T 22809-1997

Language

Chinese, Available in English version

Published By

Professional Standard - Chemical Industry

Latest

HG/T 22809-1997

HG/T 22809-1997 history

• 1970 HG/T 22809-1997 Code for design of underground mining in chemical mines