Hi, I'm playing a map where I'm trying to control my pollution, but when I installed this mod, the added furnaces have no pollution values. I dug into it, and when they released the 0.18 version, the devs "Removed EnergySourcePrototype::emissions_per_second_per_watt and emissions, they are replaced by emissions_per_minute."

In your entities.lua, replacing line 25 with:
emissions_per_minute = 1
and line 93 with:
emissions_per_minute = 2
fixed the problem and sets the pollution on the two furnaces appropriately (half the values of stone and steel furnaces).

Thanks for the mod, btw, I really like not having to belt coal all over.