Twenty-eight miners are still trapped underground while 63 others have escaped as of Thursday morning after a coal mine fire in east China\'s Shandong Province on Wednesday, local authorities said. A total of 91 people were trapped after an air compression device at a parking lot 255 meters underground caught fire at 6:45 p.m. Wednesday, China\'s News Agency (Xinhua) reported. As of 7:30 a.m. Thursday, 63 miners have been rescued, while rescue work is still underway. An investigation into the cause of the fire has been launched.