About 10 yrs ago we had a contractor boring for sewer mains in our area. Our lines had been marked and they thought they were below us.
They put a 2' auger through one of the main duct runs leaving that office. They didnt stop until they saw copper and fiber cables being pulled back on the auger. It pulled the cables through 3 manholes in both directions.
One of the big schmucks from my co showed up and told me to climb down and pull out the iof fibers so we could splice them. I told him, go ahead in, Ill watch the hole. We waited for an excavator to bring shoring.