CFR 30-71.201-2014 Mineral Resources. Part71:Mandatory health standards—surface coal mines and surface work areas of underground coal mines. Section71.201:Sampling; general requirements.
(a) Each operator shall take respirable dust samples of the concentration of respirable dust in the active workings of the mine as required by this part with a sampling device approved by the Secretary and the Secretary of Health and Human Services under part 74 (Coal Mine Dust Personal Sampler Units) of this title.
CFR 30-71.201-2014 history
1980CFR 30-71.201-2014 Mineral Resources. Part71:Mandatory health standards—surface coal mines and surface work areas of underground coal mines. Section71.201:Sampling; general requirements.