/sci/ - Science & Math

It is known that Moon is covered with oxides (5% FeO) [1] of iron and elemental iron (0.7%) [1]
How would you utilize this resource? If we make a robot that gathers these particles with electromagnet (or even a permanent one), then separates elemental Fe and collects it into a container, we could later us this iron to build simple parts by fusing it with concentrated solar.
How would you go at building such a robot? What are potential issues with separation?
Is there a simple way to convert FeO -> Fe ? How do we fuse particles together, should we use a fresnel lens or a concentrator for this task (or maybe ditch the solar and do it with a laser instead) ?

1. http://adsabs.harvard.edu/abs/1980LPSC...11.1697M