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Subject Topical
- Coal217
- Education88
- Veterans84
- Economic development70
- Lungs--Dust diseases68
- Flood control65
- Outdoor recreation61
- Coal mines and mining51
- Reclamation of land--United States51
- Imports48
- Housing47
- Small business47
- Unemployment47
- Railroads44
- Exports40
- Water treatment plants37
- Disaster relief36
- Transportation36
- Interstate Highway System32
- Coal--Transportation31