General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB 50399-2006
Scope
This code is applicable to the pre-feasibility study, feasibility study and mine design of newly built, reconstructed and expanded small mines with a designed production capacity of 30-300kt/a.
GB 50399-2006 history
2006GB 50399-2006 Code for design of small capacity mine of coal industry