"But how do you extract water that is likely locked up as small concentrations of ice in the lunar soil? Microwaves could provide the key, according to work by Edwin Ethridge of NASA's Marshall Space Flight Center and William Kaukler of the University of Alabama, both in Huntsville, who first demonstrated the technique in 2006."
sonnejw0 writes: "Now that we have identified water on the moon, how can we harvest it for lunar bases, for power and for drinking, and will it be a renewable lunar resource? NASA is already testing possible methods of harvesting this water in the vacuum of space
... using a regular microwave oven. Do you think they used the "Defrost" or "Popcorn" setting? From the article: