Columbia subject headings:
Coal mines and mining--Law and legislation--West (U.S.)
Environmental mediation--West (U.S.)
Water--Law and legislation--West (U.S.)
Harvard subject headings:
Coal mines and mining--West (U.S.)--Water-supply.
Industrial water supply--West (U.S.)
Water resources development--Environmental aspects--West (U.S.)
Water resources development--Law and legislation--West (U.S.)
Princeton subject headings: