Hi Gang, found some more facinating videos on YouTube, for example:
Short circuit on Tubular Bus Amazing, the forces that are generated in this test!!
and
Failure of a 230kv switch, not the same old one...!! There are a lot more, including this:
Accident in Nogales Substation It appears from the flash at the right of the screen at the very start of the clip that either they closed into a faulted piece of equipment or an animal contact occurred. (From the comments, and what limited Spanish I understand, it seems as though this was man-made.

)
The same user has clearer video of the aftermath and firefighting posted too.
All reminders of what can go wrong.....be safe!!