Digging the Moon with Nuclear

The jobs of my lunabot are to dig up lunar regolith, collect water, and get more metals. It will move with 2 massive wheels. My robot will carry a lot of dirt in a 1x2 box for everything it digs up. Water that goes to the body of it will go to a tub connected to the auto wash hose. Then the dust will get lifted and dumped into a sander. It will get auto-washed by itself with a massive hose from the bottom. It will have tread wheels. It will have a nuclear engine.