Proposal: A factory building that cools gases to liquid form for the sake of ease of transportation, addition of new materials for manufacturing and alternatives to enormous long distance pipes.
Some beneficial examples; Cooling Fuel Gas to Liquid Fuel Gas enabling it to be easily transported in bulk for power stations, factories, statues and tombs by fewer trucks (RL is 600:1 ratio). Liquid Hydrogen for fuel cells, mass transporting and future rocket fuel for upcoming content (RL is 850:1 ratio). Liquid Oxygen for medical, industrial, and rocket uses. Liquid Nitrogen for freezing (possibly used in the creation of the other liquids) and making ice cream. :D