Dirty lignite - one step above peat...
Poor little Greta will get her pigtails in a knoy and foam at the mouth while she screams “ how dare you”.
This is a desperation move. That stuff is loaded with sulphur, which makes for acid rain. The ancient cathedral in Muhlhausen, (East Zone) which I saw the year the border opened, was built of laterite. The Communists didn’t give a damn about pollution; they burned the stuff profligately, and the acid had obliterated all the fine detail of the carvings.
Hopefully the power plants which burn that schite will have scrubbers, but given that they were being phased out - maybe not.