Thanks for this mod that has already brought me many hours of joy and frustration :)
Currently I'm stuck, can't find out how to get compressed air. I'm playing 0.1.7, updated from 0.1.6.
Compressed air has 2 sources: either from barrels or Crude Oil heating with hot high pressure air, the hot high pressure air has several sources, but all need Compressed air at some point.
And then again, I need the Compressed Air for the Sounding payload, which is needed to unlock the Crude Oil heating anyway.
I did build a Compressor, but it only gives me the Nitrogen Compression option.