After realizing Sandpiper is shredding evidence, Jimmy literally dives into a dumpster to retrieve bags of shredded documents.
In the Breaking Bad timeline (seen in Better Call Saul's "Quite a Ride"), Saul and his assistant Francesca are shown frantically shredding every file in the office to erase his paper trail before he flees to Omaha. Better Call Saul ...
Jimmy and Chuck spend days painstakingly taping together thousands of paper strips. This "jigsaw puzzle" reveals a "smoking gun" invoice that proves the facility was defrauding its elderly residents through illicit interstate commerce. After realizing Sandpiper is shredding evidence