I had the opportunity to listen to a presentation by a Mr. Randy Mikula, who gave an excellent presentation on his work on trying to salvage, basically, the tailings ponds.
Let me see if I can get this correctly. My understanding is that in terms of construction material used to build them, these ponds--one of them in particular, or I don't know if it was collectively--are larger than any dam in the world, though that may no longer be true once the Three Gorges Dam is built.
How many ponds are there at the moment?