 Moon inhabitants must make all of the following considerations regarding their equipment EXCEPT:
This was to allow the air-conditioning system to function properly, and to prevent air loss in case of the highly improbable meteor damage. For example, because of an order of his stating that there would be no alcoholic beverages within the survey building, the entire survey was assured of a constant supply of home-made, but passably good liquor. It was used mostly, from sun-up to sun-down, to supplement the nuclear power plant. All of these needed water to form, and their existence on the Moon puzzled him for a while. They claim that a radio that won't carry beyond the horizon isn't any good, and one that will bounce messages from Earth takes up too much room."
 Protection from extreme temperatures
 Protection from meteor showers and volcanic eruptions  The cost of rare materials imported from Earth  Protection from extreme temperatures  The ability to function with minimal water use