Lunar regolith isn't waste.
It's a construction material.
The lunar surface contains abundant silicon, iron, aluminum, calcium, titanium, and other oxides needed for structural manufacturing.
Instead of launching concrete, steel, or shielding from Earth, those materials can be manufactured where they're needed.
Laser sintering converts loose lunar regolith into dense, load-bearing structural components without binders, water, or an Earth-based supply chain.