The Waste Disposal is a room in the Phazon Mines. It connects the Main Quarry to the Ore Processing by two White Doors. Most of the room is taken up by a large structure filled with water. These tanks can be entered using special Morph Ball doors at the top and bottom. There are a number of jets that can be used to propel the Morph Ball high in the water. It is significantly easier to navigate the large tanks when going from Ore Processing to the Main Quarry, as Samus only needs to fall, where as the other way Samus must carefully move from platform to platform.