Early stage red cubes. For X-ray Cracking research, import Energetic Graphite. After, the extra sorters from the main refinery can be deleted and left to work with secondary refineries. the refineries will not jam even in case of complete filling. the pairs can be tiled for increased production. fits nicely in the 5 square tropics regions notes: - deal with extra Hydrogen and Refined Oil as you wish (burn, use in other places) - keep the sorters at green to avoid jamming - the blueprint is a tweak from an old one of Nilaus