Columbia subject headings:
Harvard subject headings:
Acid mine drainage--Appalachian Region.
Appalachian Region--Economic conditions.
Coal mines and mining--Environmental aspects
Coal trade--Appalachian Region.
Lungs--Dust diseases
Strip mining--Environmental aspects--Appalachian Region.
Princeton subject headings:
Appalachian Region--Economic conditions.
Coal mines and mining--Appalachian region.
Environmental policy--Appalachian region.