Comment by thombat
That description of heavy lead shielding of a power plant on Mir surprises me since photos show it as having solar arrays. Wikipedia also gives the power source as solar with no mention of lead components. Can you add further details of this?
It was just my off-hand recollection. I could be mistaken or possibly conflating Mir with some other space craft that was de-orbited in the past. I'm fairly confident that the Mir de-orbit was notable both because of its size and that it was expected to have an unusual degree of debris surviving re-entry and reaching the surface.