I walked by the Cauldron on a sunny Saturday afternoon and took the following pictures.
Workers doing maintenance work on the Cauldron. The glass piece seems to be very heavy.
It took the workers a long time to bolt a glass piece onto the Cauldron surface. Don't drop it!
It looks like the Cauldron will be well maintained.
I guess we don't have to worry about spare glass piece for the Cauldron. Based on the information on the side of the truck, the glass piece is manufactured by a local company in Coquitlam. The company produces various type of glass for different applications like decorative art panels, countertops, tables etc. If you are interested, their website is at
http://studiog3glass.com/