http://pec.lib.wvu.edu/record/P165511974Ventilatory capacity and lung volumes of US coal miners. Journal article reprint from: <em>Archives of Environmental Health</em>, v.28 (1974:Apr.). Kibelstis, John A.Reger, Robert B.Morgan, William Keith C.Lungs--Dust diseases--Research.Coal miners--United States.Pneumoconiosis.Respiration--Measurement.14256