Is there a lung cancer risk in US coal miners?

@article{Taeger2014IsTA,
  title={Is there a lung cancer risk in US coal miners?},
  author={Dirk Taeger and Olaf Hagemeyer and Rolf Merget and Thomas Br{\"u}ning and Dirk Pallapies},
  journal={Occupational and environmental medicine},
  year={2014},
  volume={71 7},
  pages={523}
}