"CJB" wrote in message
...

If the train had not been there then the collapsing gantry could have
fallen on the HEX / HConn overhead wires causing high tension sparks
all round.

I think you exaggerate.

Pictures of the original set up suggest it is further away than it looks in
some of the pictures of the damaged condition. If the complete height
including the whole supporting structure had fallen over (ie pivoting at the
ground) it might reach the tracks, but I suggest the top section shown
would not reach as far - unless defying the laws of gravity...

Paul S