Columbia subject headings:
Reclamation of land--Law and legislation--United States.
Strip mining--Law and legislation--United States.
Harvard subject headings:
Princeton subject headings:
Nonmetallic minerals--Environmental aspects--United States.
Oil-shale industry--Environmental aspects--United States.
Quarries and quarrying--Environmental aspects--United States.
Reclamation of land--United States.
Sand and gravel industry--Environmental aspects--United States.
Strip mining--Environmental aspects--United States.