What is complicated black lung?

Related questions

1. What can cause pneumoconiosis?
2. What are the stages of black lung?
3. What causes your lungs to turn black?
4. What are the different types of pneumoconiosis?
5. Do your lungs clean themselves?
6. How do lungs get rid of dust?
7. How is pneumoconiosis diagnosed?
8. Is tuberculosis a type of pneumoconiosis?
9. What are the three primary pneumoconiosis?

Tags

1. #inhale
2. #tissue
3. #black
4. #disease
5. #massive
6. #period
7. #related
8. #progressive
9. #called
10. #particles
11. #illness
12. #simple
13. #spots
14. #fibrosis
15. #considered
16. #complicated
17. #means