environmental
andalusia
artificial
brown
chemical
chemicals
contaminate
contamination
copper
dam
damage
dangerous
destruction
dirty
disaster
ecology
environment
garbage
global
gold
hazardous
heavy
huelva
industrial
industry
lake
leak
liquid
material
mine
nature
open
pit
poison
pollutant
polluting
pollution
protection
red
riotinto
rock
spain
taint
toxic
view
wall
waste
water