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- Coal mines and mining--Appalachian Region.4
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- African-Americans--Migrations--History--19th century.1
- Chest radiography.1
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- Coal miners--Appalachian Region.1
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- Coal mines and mining--United States.1
- Coal mines and mining.1
- Coal--Appalachian Region.1
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- Lungs--Dust diseases.1
- Pneumoconiosis.1
- Reclamation of land--Appalachian Region.1
- Reclamation of land.1
- Respiratory organs--Obstructions.1
- Rural-urban migration--Appalachian Region.1
- Rural-urban migration--Southern States.1
- Rural-urban migration--United States.1
- Strip mining--Appalachian Region.1
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