MEXICO CITY—The bodies of two miners were pulled from a small coal mine in a northern Mexico border state by early Sunday, bringing to three the number confirmed dead in the flood and partial collapse of the shaft. Three miners remain missing, and search efforts continued. The dead miners were found at the small coal mine in the northern Mexico border state of Coahuila, where there have been complaints for years about unsafe conditions at coal mines. The federal civil defense office said rescuers had worked through the night. President Andrés Manuel López Obrador said a dam or holding pond had collapsed, causing the flood. Efforts have concentrated on pumping water out of the mine. The army dispatched a 28-member team that specializes in looking for victims in collapsed structures and it was using two trained dogs at the mine. The Micarán mine, located in Muzquiz township, appears to be …