"Black Lung Act" . . . "black lung disability" . . "Black Lung Benefits Act of 1972#Black Lung Disability Trust Fund" . . . "Black Lung Benefits Act" . "Black Lung Disability Trust Fund" . "black lung benefits" . "Black Lung Benefits Act of 1972" . . "Black Lung Consolidation of Administrative Responsibility Act" . . "Black Lung Benefits Act of 1972" .