Cheryl, Chris S. and I went down to Y End TMS lab to get the optic into a cake tin in prep for shipment to KAGRA (eventually). The process went smoothly with no magnet disturbance. We took pix of the optic (which was relatively clean) and the SUS cage. The exposed height adapter plate surface contained what Cheryl called a "forest of fibers": see photo below. Lots of particulate on other horizontal surfaces.

The cake tin is now in the OSB Optics Lab. We removed the SUS cage and the dutch oven from the TMS lab.