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Spirit is made out of a mixture of titanium and mesh stainless steel. It is 3.5 ft x 2ft x2ft, It has a shielded vacuum to suck up the regolith. The shield is a cup like scoop with 3 vacuum tubes inside. The scoop can dig into the regolith about 2 feet. Once in the vacuum turns on and begins to suck up the regolith into the storage area. With its reinforced quad tires Spirit can go in all directions while carrying the regolith in his 18 inches x 15 inches x 15 inches storage box. The stainless steel mesh creates an electrical field around Spirit that dust will bounce off of. Spirit also has dust repelling fibers on the bottom to keep the bottom and tires dust free.