Silica Exposure Appears Causal in Resurgent Severe Coal Workers' Pneumoconiosis - Robert Cohen; Cecile Rose; Leonard Go; Lauren Zell-Baran; Kirsten Almberg; Emily Sarver; Heather Lowers; Cayla Iwaniuk; Sidney Clingerman; Diane Richardson; Jerrold Abraham; Carlyne Cool; et al. (Elsevier, 2022)