CNS 6939-1981
Quality Standard of Rock Dust Used in Coal Mines (English Version)

Standard No.

CNS 6939-1981

Language

Chinese, Available in English version

Release Date

1981

Published By

Taiwan Provincial Standard of the People's Republic of China

Latest

CNS 6939-1981

Scope

This standard applies to the quality of stone powder dispersed in coal mine pits containing flammable gas, coal dust, mixed dust explosions or risk of explosion propagation, and stone powder accumulated in stone powder sheds, or used in bags.

CNS 6939-1981 history

• 1981 CNS 6939-1981 Quality Standard of Rock Dust Used in Coal Mines