The bunker consisted of three main elements. The main part of the building was a giant structure some wide and high, housing the LOX plant and a vault where missiles would be assembled and prepared. Its walls were up to thick and the bunker's working levels descended below ground. The plant would house five Heylandt compressors, each capable of producing about 10 tons of LOX per day. About 150 tons of LOX were to be stored in insulated tanks on-site. The facility was intended to store up to 108 missiles and enough fuel to supply three days' worth of launches. The Germans planned to fire up to 36 rockets a day from the site.