An antimatter processing plant or refinery is a factory constructed to purify and convert antimatter precursors into usable antimatter. Antimatter precursors are mined from a variety of sources and shipped to refineries for processing. The processed antimatter is used for starship drives and antimatter warheads. The process can be extremely dangerous for workers. Hurston in the Stanton System and the penal planet Quarterdeck are home to a significant number of antimatter processing plants.