Keywords: L-14-04-23-A 163 (13984432291).jpg Secretary Thomas E Perez speaks about the coal dust rule at National Institute of Occupational Safety and Health NIOSH in Morgantown West Virginia https //www flickr com/photos/usdol/13984432291/ L-14-04-23-A_163 2014-04-23 11 45 https //www flickr com/people/52862363 N07 US Department of Labor 38 893055 -77 014445 source Flickr PD-USGov US Department of Labor https //flickr com/photos/52862363 N07/13984432291 2016-09-06 06 54 58 United States Government Work Uncategorized 2016 December 21 1 |