Once released through the hatch, the WaSiBo s remain exterior, thereby avoiding potential contamination with the interior. The double acting machine uses it’s ability to shovel and heat regolith both to collect Martian dust and extract water and other volatiles, while its laser serves to both sinter waste regolith as well as cut solid ice below the ice table. All ice is melted and deposited within a reservoir bag for use in future printing as well as greenhouse maintenance. These bots are energy efficient and low maintenance, as they rely on the physics of sublimation rather than laborious geologic mining, using solar energy and the naturally cold environment (-50C) for the water, ice and vapor phase changes.