A Resource Unit, normally shortened to RU, is a measurement of construction materials found throughout the Homeworld universe. Resource units are acquired through the mining of asteroids, processing of crystals, and collection of space dust. These are carefully categorized by the Resource Collectors to avoid false mining. The raw compounds were then converted to construction materials by Phased Disassembler Arrays. In Homeworld 2, resource collectors can harvest debris from the remains of destroyed Super Capital Ships.