We opened a Western Digital in our Clean Room. We removed the read/write heads and they looked good for the most part with the naked eye. But under the microscope, we can see the Head 8 (the head that reads from the top platter) has traces of shrapnel on it. The good news is that the rest of the heads are looking very good. The next step here will be to find at least one good donor part to attempt a head swap.