The electrical grounding system is the largest radio frequency (RF) radiation antenna system ever constructed in the history of mankind.

I made the mistake of working at the world's largest telescopes and now show classic health degradation that is associated with that biologically toxic environment.

Snow cleaning of the world's largest telescope mirrors was an impressive sight. The optics technicians would climb into a huge telescopic boom lift and spray immense clouds of cold carbon dioxide snow and gas onto the ten meter diameter mirrors high above the floor indoors. It would cause some of the accumulated dirt to magically fall off, leaving it less dirty.