I'll tell you one thing Ray.
About 3 years ago when I first went back to Faults work down here, the local RSA were doing some extensions.
I was sent there to mark out the cable runs for the excavator operator.
I knew where these cables went, because we laid them 7 years previous.
I sprayed the area where the cables were and thought nothing more of it.
I got talking to a few of the ladies and had a cup of tea (10am) when there was an almighty bloody explosion from outside.
The guy had gone over my spray marks and torn up a Neutral-Screened cable that fed the Supermarket next door.
It was still crackling when I got out there.
This was the largest sized copper cable that we use and we had to order in a jointing box for it.
Anyway that was probably a good thing because later on in the day, the guy hit the other side of the cable on the other side of where the foundation was going to be.
I haven't seen that excavator operator since that day.