A coal mine director in southern Poland says that three workers were killed and one was injured when a loose electric cable fell on them as they were working in one the mine\'s shafts, AP reported. The workers were installing a lift cable some 320 meters (350 yards) underground at the Myslowice-Wesola coal mine when it got loose and fell on them early Monday. The mine director, Eugeniusz Malobecki, said three workers were killed on the spot and the fourth was taken to hospital in stable condition.