Using the quarry and the extractor in the latest version doesn't appear to generate any pollution any more? I have used with high power cost before to generate lots of pollution to increase bitter attacks in the past and to use with Air Filtering Pollution mods.

Not sure when or why pollution was removed, but I put it back in the new update (1.8.0). By default the mk1 quarry and extractor both produce 10/m, mk2 produces 20/m, and mk3 produces 30/m. There's a new startup setting to increase/decrease the amount of pollution as desired. https://i.imgur.com/Cz2M0eb.png

Default is 1 meaning 100%.