An apparatus and method for on-site microwave consolidation of planetary regolith, soil and dust is disclosed. Such particulate materials may be converted into useful products such as roadways and other construction materials. In one embodiment, a portable microwave generator and waveguide system is used to generate and direct microwaves to a lunar surface containing fine iron-containing particles to sinter and/or melt the particles. The portable system may be provided in the form of a lunar paver with a single or multiple waveguides arranged to direct sufficient microwave energy to the lunar surface to heat, sinter, melt, or otherwise consolidate the lunar soil into a solid mass suitable for use as a road or path. Other applications of this in-situ microwave heating process include the release of solar-wind implanted gases, extraction of polar water-ice, and production of oxygen.

 
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