An explosion rocked Garner, N.C on Tuesday morning as the roof of a Slim Jim snack factory caved in causing fires and igniting the factory’s ammonia-based refrigeration system. Due to the collapsing roof and the ammonia leak that had to be stabilized, the scene was not deemed safe for rescue crews to search the wreckage until Wednesday. As the team searched the rubble, 3 people were pronounced dead and dozens of other workers were rushed to hospitals with injuries and severe burns. Some workers had burns covering 40%-60% of their bodies. The Slim Jim snack factory was reported to have had some previous safety violations, but the factory was last inspected July 2008 and no violations were found at that time. It remains unclear whether the plant, which is owned by ConAgra Foods, will eventually reopen. However, the company is setting up a donations fund for the workers and their families. Meanwhile, the U.S. Chemical Safety Board is investigating the incident to confirm the cause of the blast.