their "gods." the Anunnaki, came to Earth nearly a half-million years ago to mine gold that they presumably needed to form a high-altitude shield to protect their own planet's atmosphere.
Assuming for argument that this interpretation is correct and is historic record rather than myth, perhaps the Anunnaki already mined the asteroids.
The Anunnaki history of our solar system is interesting, especially as relates to Earth and the asteroid belt. They said (again according to Sitchin) that the general orbit of the asteroid belt was once the home of Tiamat,a planet roughly twice the size of Earth, that was struck a devastating, somewhat glancing blow billions of years ago by an even larger planet from outside the solar system that had been captured by the Sun in an extremely elliptical orbit. On its repeated intermittent passes this invader messed with other planets' orbits as well.
At any rate, some of the debris from this collision created the asteroid belt while the remaining undemolished portion of the planet was knocked into a new orbit closer to the sun and reshaped itself to become Earth.
If the Anunnaki pieced this chain of events together they must have assayed the asteroids and Earth and concluded many asteroids were actually pieces of Earth. (Some would logically have come from the invader planet as well.)
It has been theorized that heavy metals are rare in the crust of rocky planets because they would tend to concentrate in the core and that only a planet whose core had been breached by impact would be likely to contain any heavy metals in the crust. If both the theory and the Sumerian account as told by Sitchin are valid, then Earth may indeed be a rare case among planets for containing available gold and platinum (lead too we might suppose). It might be far more accessible in the asteroids, in which case it makes sense for the Anunnaki to have mined there first rather than enter the deep gravity well of Earth.
If Cameron et al. find an abundance of precious metals, especially gold, among the closest asteroids, then maybe the Sumerians didn't know what they were talking about :-) Yet there evidence of extremely old mine tailings in South Africa where the Anunnaki were alleged to have mined. Modern gold miners have learned that these ancient tailings often indicate the presence of gold deposits.
(Presumably the ancient gold miners are the same ones who built an amazing network of mysterious stone structures, in what has been called the "largest city ever," over much of southern Africa, doorless circular structures linked by channels that have long been passed off as roadways and cattle corrals but are now being seen in a different light due to the extensiveness of the development and the fact the stone used to build them was quarried some distance away.)
New Hampshire and Ecuador.
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