LD 39-1992
Management standards for exposure concentration of respirable coal dust in air in workplaces (English Version)
- Standard No.
- LD 39-1992
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Labor and Labor Safety
- Status
- 2009-01
- Replace By
- AQ 4202-2008
- Latest
- AQ 4202-2008
- Scope
- This standard specifies the management standards for the exposure concentration of respirable coal dust in the air in workplaces. This standard applies to coal dust with a free silica content of less than 5% in all types of coal mines.
LD 39-1992 history
- 2008 AQ 4202-2008 Administrative standard for personal exposure concentration of respirable coal dust in the air of workplace
- 1970 LD 39-1992 Management standards for exposure concentration of respirable coal dust in air in workplaces
LD 39-1992 Management standards for exposure concentration of respirable coal dust in air in workplaces was changed to AQ 4202-2008 Administrative standard for personal exposure concentration of respirable coal dust in the air of workplace.
