By Shinichi Saoshiro and Kiyoshi Takenaka TOKYO (Reuters) - Japanese rescuers were digging through the rubble of buildings and mud on Saturday to reach dozens believed trapped after a powerful 7.3 magnitude earthquake struck a southern island, killing at least 32 people and injuring about a thousand. Residents near a dam were told to leave because of fears it might crumble, public broadcaster NHK said. NHK said about 150,000 people in total across the affected region had received evacuation orders amid fears that heavy rain could trigger more landslides as the two quakes have made the ground unstable.
