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- Chest--Diseases.3
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- Chest--Diseases.✖[remove]3
- Lungs--Dust diseases.3
- Chest radiography.2
- Pneumoconiosis.2
- Respiratory organs--Obstructions.2
- Autopsy.1
- Coal miners--Diseases--Appalachian Region.1
- Coal miners--Diseases--Pennsylvania.1
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- Coal mines and mining--Pennsylvania.1
- Pneumoconiosis--Pathology.1
- Social security--Law and legislation--United States.1
- Survivors' benefits--Law and legislation--United States.1