Public Records Show ... UW Under Investigation for Monkey Cruelty

This KOMO 4 story describes how the University of Washington is under investigation for unauthorized surgery and experiments on monkeys. How do we know this?

"Through public disclosure requests we obtained thousands of pages of internal e-mails and reports from the UW and federal agencies. Some of the surgeries were approved, many more were not. We found evidence that some monkeys underwent a dozen or more surgeries, as the eye coils and head chambers were removed and replaced, again and again."