A US coalminer left a detailed note showing that he and other trapped workers were alive at least 10 hours after an underground explosion, a family member said. The daughter of 61-year-old Jim Bennett, who was a shuttle car operator in the West Virginia mine, said the note has three or four entries, the first coming on Monday at 11.40am and the last, in words that trailed off the page, at 4.25pm, nearly 10 hours after the blast. "Each time he documented, you could tell it was getting worse," Ann Merideth told The Associated Press. "Later on down the note...