Revolutionary Catalonia provides a good example of an anarchist project where large scale industrial infrastructure was maintained and could help form the blueprint for decentralised industry. Much ink has been spilled pointing fingers about who was to blame for the sectarian infighting that ultimately led to its collapse, I think a more important question would be “how do we stop something like that happening next time?” A question that I have no clue how to answer.
Anarchist Ukraine - correct me if I’m wrong, but this is about the Mahknovists right? Despite being largely agrarian, they were able to rebuild destroyed infrastructure an astounding rate in the face of multiple invasions and an ongoing civil war. There are rumours of antisemitism within Mahknovshchina but a lot of them come from USSR aligned sources and are hotly debated by different anarchist groups, I don’t know enough about Ukrainian history to know if the accusations are true.