A couple of months ago a team of workmen repairing a road surface nearby hit a tel. cable and took out all the phones in my settlement.

Some years ago I recall hearing about a team of outside contractors working at Goonhilly (big telecoms satellite station in England) who went into an underground 11kV feeder, though fortunately it was isolated at the time. When hauled before the boss, apparently the "head digger" said he saw the bright yellow and black marker tape "Danger: Electric cables below") but didn't think it mattered! [Linked Image]