5 lanes of smelters using MK.III proliferator. Should consume ~600 iron ore/sec and produce ~600 iron ingots/sec. There are some issues with the stackers at the end I don't quite understand that makes the output slow down to ~590 iron/sec. Shouldn't be too much of an issue. This design is more power efficient than using plane smelters as plane smelters consume 4x the power draw for 2x the production speed while proliferated arc smelters consume 2.5x the power draw for 2x the production speed. That's a power saving of 40% at the cost of the array being twice the length it could be.