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**HomePageOEMfreeSOFTWARE** · 04-30-2012, 07:43 PM

Well, it will happen commercially once the resources start to deplete so far here on Earth that the unit costs go through the roof. Especially if the moon or asteroid deposits are high grade.

what makes you think that resources will be so 'depleated' here that we'll need to source them off world?

I mean, the Earth is pretty much a giant metal ball?

04-30-2012, 07:43 PM	#27
HomePageOEMfreeSOFTWARE Join Date Oct 2005 Posts 516 Senior Member	Well, it will happen commercially once the resources start to deplete so far here on Earth that the unit costs go through the roof. Especially if the moon or asteroid deposits are high grade. what makes you think that resources will be so 'depleated' here that we'll need to source them off world? I mean, the Earth is pretty much a giant metal ball?
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