1. US Congress. Federal Coal Mine Health and Safety Act of 1969. Public Law 91-173, 91st Congress, S. 2917,1969
2. American College of Occupational and Environmental Medicine. Comments of the American College of Occupational and Environmental Medicine. US Mine Safety and Health Administration: Lowering Miner's Exposure to Respirable Coal Mine Dust, Including Continuous Personal Dust (RIN 1219-AB64). Arlington, VA: Mine Safety and Health Administration.
3. Current Intelligence Bulletin 64: Coal Mine Dust Exposures and Associated Health Outcomes: A Review of Information Published Since 1995;Attfield,2011
4. Resurgence of a debilitating and entirely preventable respiratory disease among working coal miners;Blackley;Am J Respir Crit Care Med,2014