Arlington, VA – The Mine Safety and Health Administration has extended (.pdf file) to June 20 the comment period for its proposed rule (.pdf file) to lower miners’ exposure to respirable coal mine dust.
This is the third extension for the rule, which was published Oct. 19, 2010.
Among several changes, the rule would lower the exposure limit for coal mine dust, require use of continuous personal dust monitors, address extended work hours and expand medical surveillance.
