Explanation for last one please. 31d. She disposed of fragmented radioactive waste(4). ?RUD. The answer appears to be CRUD but how does this match the wordplay?
I think fragmented is crushed, just remove the "she" for crud.
If you google "crud radioactive waste" it is actually an official term too.
How did you justify feignedly for 36 across and puree for 33 across please?