An essential element of the projectile cannons, specifically those utilized in the waste disposal systems of Coruscant's ecumenopolis, was the accelerator gate. These gates were responsible for launching all of the non-recyclable waste produced by the planet, contained within enormous sealed containers, beyond the planet's gravitational pull. The waste was typically directed either into orbit or towards a collision course with one of the capital world's four moons. On occasion, squatters would obstruct these accelerator gates by building makeshift dwellings in the area; in one instance, this resulted in a malfunction that led to the deaths of all the gate's inhabitants, as well as several others in the vicinity.