The underground coal mining, in terms of fatal and injury accidents, has the first place among all businesses due to "spontaneous combustion of coal" and "presence of methane gas" in coalmines. In May 2014, the most casualties (301 people) of recent years occurred in the Soma Eynez mining quarry that accounts for almost half of the death of the last 30 years. The Turkish Thoracic Society Environmental and Occupational Lung Disease assembly, aimed to determine the causes of coal mine accidents and analyze what should be done to prevent occurrence of accidents and casualties.