On 6/15/07, Eugen Leitl <[EMAIL PROTECTED]> wrote:
(...)
Sure, and don't forget to add some hand mirrors, and glass pearls.

It seems that you are trying to equal all rare elements to gold -
i.e., something that is valuable just because it is rare - but
unfortunately that does not seems to be the case. Platinum for
instance has a lot of industrial applications, including the use as a
catalyst in fuel cells, and in fact its price has been skyrocketing in
past years due to increased demand. (As is the case with many metallic
commodities.)

(...)
Why asteroids? The Moon is close enough, both in distance, and
in terms of delta v.
(...)

Unless you know of some reserve of pure metal alloy buried under the
regolith, there will always be some raw materials that are of easier
exploration in asteroids than by processing zillions of tonnes of
regolith - and that adds "distance" in commercial terms. Also, there
are a few asteroids that are even closer to us in terms of delta v
than the Moon - the gravity well of our neighboring world is not
exactly shallow.

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