Dr. Phil Metzger, Ph.D. is the Lead Research Physicist and founder of NASA’s Granular Mechanics and Regolith Operations (GMRO) Lab, which is part of the Surface Systems Swamp Works (gotta love it).

Here’s Phil’s explanation of what the GMRO does: “The GMRO Lab develops technologies primarily related to regolith [Ed. loose rock that sits on top of bedrock] – that is, excavation, conveyance, in and out of chemical processors, manufacturing and construction with regolith, site preparation, landing pad construction, prediction of rocket exhaust blast effects, etc.”
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