This machine refines raw iron into higher grade iron plating that can then be used for construction.
Iron refineries are necessary for the processing of Raw Iron into Iron Plates. A non-upgradable, unpowered manual version can be constructed after researching Iron Plates. All of the Iron Refinery buildings require electricity and can be constructed after research in Iron Plates II, Iron Plates III, etc.
Iron Refinery III,Iron Refinery IV buildings are not fully automated as you will still require at least one worker to keep them full of ore.