On April 6, 2003, the richest operating uranium mine in the world — MacArthur River, in Northern Saskatchewan — suffered a cave-in and was flooded with radioactive worker. For 48 hours workers were sent into the flooded areas to save the mine, without respirators, despite extremely high levels of radon gas in the mine atmosphere. Radiation monitors flashing alarms were turned off and ignored. Gordon Edwards was interviewed by CBC News one year after the event.