http://pec.lib.wvu.edu/record/P165751974Mortality from lung cancer in U.S. coal miners. Journal article reprint from: <em>American Journal of Public Health</em>, v.64:no.3 (1974:Mar.). Costello, Joseph.Ortmeyer, Carl E.Coal miners--Mortality.Lungs--Cancer--Risk factors.Coal miners--Diseases.14256