Medium Walls can be used for structure enhancement and fortification purposes. Like the concrete slabs, walls can not be repaired. The Wind Traps provide power and water to an installation. Large, aboveground ducts funnel wind underground into turbines which power the generators and humidity extractors. The Refinery is the basis of all spice production on Dune.
Harvesters transport mined spice to the Refinery where it is converted into credits.
Refined spice is automatically distributed among the silos for storage. All Refineries will be provided with a Harvester. 1000 spice units Spice Silos hold harvested spice. When the Refinery completes the conversion process, it automatically distributes the spice evenly among the silos. An on-screen radar is activated when construction of the Outpost is complete.