Columbia subject headings:
Copper mines and mining--Arizona--Tohono O'Odham Indian Reservation.
Mineral industries--Environmental aspects--Arizona--Tohono O'Odham Indian Reservation.
Mining leases--Arizona--Tohono O'Odham Indian Reservation.
Strip mining--Environmental aspects--Arizona--Tohono O'Odham Indian Reservation.
Harvard subject headings:
Princeton subject headings:
Copper mines and mining--Arizona--Papago Indian Reservation.
Environmental impact statements--Arizona--Papago Indian Reservation.
Mineral industries--Environmental aspects--Arizona--Papago Indian Reservation.
Strip mining--Environmental aspects--Arizona--Papago Indian Reservation.