NEWYou can now hear Fox News articles. The Ottawa Fire Department (OFD) reported that the explosion was likely caused by equipment failure during the process of transferring magnesium into a container. Two people were killed in North Carolina when a ‘planned’ fight escalated into shooting near a middle school.The explosion was caused by a malfunction in the system. It is believed that oxygen levels increased, causing a reaction between the magnesium and oxygen. The two injured employees were transported to a hospital in the area for treatment. One worker was rescued by an initial response team from the facility, while the other was able self-evacuate into a nearby building. The extent of the workers’ injuries is unknown. A secondary search confirmed that all facility personnel had been accounted for. The extent of the injuries of the workers is unknown. A secondary search confirmed that all facility staff had been accounted.