This is crazy!
From the youtube video description:
“Garrett by Honeywell tests all of their turbos to ensure that no materials penetrate a “containment shroud” surrounding the turbocharger. A test to ensure safety. All Garrett Turbos go through this test, even in 1985.
This recently found footage has never been shown to the public and demonstrates how much damage a turbo potentially could do if it is not engineered to contain a wheel burst properly. All Garrett Turbos are engineered not only to perform to create power, efficiency, and reliability but also for safety if this were ever to happen. Garrett performs these tests to make sure that this doesn’t happen!”