Realistically and typically, there will be search station after a "baggage scanner" (explosive detection, x-ray, CT) whereby a staff member in a security screening capacity will remove the rejected bag from the active belt to perform a search. This might be a mechanically assisted action, using a lift-assist system or a diverter. After a search and removing any items, a card notifying the owner of the baggage will be left inside their baggage,
1. that their baggage has been searched, and
2. an itemized list of what items have been removed, and
3. if and how any locks were opened in the process, and
4. contact information
The baggage is them reinserted onto the active belt to continue downstream.
That means a "baggage destroyer" might not be the best representation of what actually occurs and could be replaced by a search station instead.
A search station and each scanner needs to be staffed by a single security staff member.