![Black lung disease is common in](https://www.gkseries.com/blog/wp-content/uploads/2022/01/Black-lung-disease-is-common-in.png)
Q. Black lung disease is common in
A. farmers
B. workers of petrochemical industry
C. coal miners
D. refinery workers
Answer: coal miners
A. farmers
B. workers of petrochemical industry
C. coal miners
D. refinery workers
Answer: coal miners
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