Though no workers died, prosecutors say the mine managers put more than 100 miners’ lives at risk. Instead, prosecutors say, managers kept miners working underground for portions of three shifts while trying to fight the uncontrolled fire. Prosecutors say Koontz then directed another person to delete a record from Parsons’ cellphone showing a call from Koontz. Sugar Camp is Illinois’ largest coal mine and one of the nation’s largest underground coal operations. “Supporting MSHA’s work to protect coal miners is an important part of ENRD’s mission.”