Rynek pracy · 12.03.1996

Mine Shift Atmospheric Conditions; Respirable Dust Sample

The Mine Safety and Health Administration (MSHA) and the National Institute for Occupational Safety and Health (NIOSH) are reopening the record for their joint notice proposing a finding that the average concentration of respirable dust to which each miner in the active workings of a coal mine is exposed can be measured accurately over a single shift. This finding is being made in accordance with section 202(f) of the Federal Mine Safety and Health Act of 1977 (Mine Act). The Agencies are reopening the record to submit a definition of accuracy, to supply new data and statistical analyses on the precision of coal mine respirable dust measurements obtained using approved sampling equipment, and to allow the public time to review and submit comments on this supplemental information.