Al-Mishraq
Al-Mishraq, or Mishraq Sulphur State Company, is a state run sulfur plant near Mosul, Iraq.
It has twice been set alight and burned for prolonged periods. In 2003, what is thought to have been a deliberately started fire, burned for about three weeks, resulting in the largest human-made release of sulfur dioxide ever recorded. In 2016 it was set alight by ISIL and burned for seven days.