1) DM-Conveyor is an Unreal Tournament map, not Unreal (New2This, "Unreal" or "U1" refers to Unreal I, the original game, while "UT" refers to Unreal Tournament - to avoid mixups).
2) DM-Conveyor uses zone velocity to create an illusion of conveyer belts (as Tarq said); the only other movers that i recall on that map are elevators.