SUDBURY, Ont.—The first of dozens of miners who had been trapped underground for more than 24 hours following an incident at a mine in northern Ontario began returning to the surface late Monday, their employer said. An official with mining company Vale, Gord Gilpin, said in a statement that they were “relieved and delighted to see these individuals returning to surface safe and sound.” Vale had said earlier in the day that a rescue team had reached the 39 workers, who were in several different “refuges” between 900 and 1,200 metres underground at Totten Mine, located about 40 kilometres west of Sudbury, Ont. No one was injured, and Vale said it expected all 39 employees to return to surface in the coming hours. The company said the workers became stuck after a scoop bucket being transported underground on Sunday detached and became hung up in the shaft, rendering normal conveyance …