Is the copper plate casting recipe meant to not be usable until long after it's unlocked? Unless I'm missing something it would seem the Sulfur Dioxide would fill up a whole tank every few minutes, and has no use at least until petrochem is well established. And (looking ahead from where I am now at least), it's unclear whether the resulting heaps of sulfur could be adequately consumed.
Overall after 10ish hours this mod is scratching a nice itch for me, but these unusable byproducts are a real hangup in the progression. Other early examples include ash, coal tar, and metallurgical dust. Even the brutal PyMod gives you a hole to flush liquids down (and of course the tailings pond).
