Question: What occupation puts one at risk for black lung?
Answer: Coal seams; Collieries; Coal miner; Coal mines; Colliery; Coalminer; Coal mined; Surface coal mine; Coal Mining; Coal-miner; Coal mine; Coal extraction; Environmental impact of coal mining; Coalworks; Deep mine; Underground coal mining; Coal pit; Coal mining; Coal-mine; Highwall; Opencast coal mining; Coal production; Mining coal; Coalmining; Coal seam; Coal Miner; Opencast coalmine; Coal field; Coal-mining; Coalmine; Underground coal mine; Environmental impacts of coal mining