Lead from old batteries furnace (Secondary Smelter) there must be a structure, a closed system that can be completely closed. any time at all to make Fusion a collect polluted air and powerful enough to collect the waste air.
Furnace lead from old batteries (Secondary Smelter) will be structured as a closed system that can be turned off completely during the annealing. You must have a system that measures air pollution and air pollution powerful enough to gather.
The furnace of lead from old batteries (Secondary Smelter) must have a closed system structure can close close all the time the melt. Including the system to collect the polluted air with size and powerful enough to collect air.