RA2:Ore Silo

From Command and Conquer Wiki

The ore silo was a cylindrical open-topped structure that was designed to keep superheated excess raw ore for later processing and manufacturing of units. The structure was collected via pipes to the nearest ore refinery, where the raw material was processed, as well as war factory structures, where the smelted ore was utilized.

Due to advances in processing and storage technology, in Great World War III, silos were no longer needed to store excess ore.