Keywords: Colorado Coal Miner waiting on black lung screening (9256404966).jpg Coal miner in Colorado completing paperwork for the Enhanced Coal Workers' Health Surveillance Program black lung screening https //www flickr com/photos/niosh/9256404966/ Colorado Coal Miner waiting on black lung screening 2007-11-01 16 55 https //www flickr com/people/25069384 N03 National Institute for Occupational Safety and Health NIOSH from USA PD-USGov NIOSH http //flickr com/photos/25069384 N03/9256404966 2015-04-23 03 50 12 United States Government Work Coal Mining Safety Work Workplace Miners National Institute for Occupational Safety and Health |