Twenty were injured and three are missing.
A major explosion hit a ConAgra food plant where Slim Jims are made Tuesday, injuring 20 people, leaving two unaccounted for and filling the air with a thick ammonia scent.
Workers inside the Jones Sausage Road plant said the boom hit without warning just past 11:30 p.m., blowing open doors, collapsing the roof and shaking the entire plant.
"Everything in that building was moving and all you could smell was this heavy ammonia," said Anthony Spruill, 54, who was driving a forklift about 500 yards from the blast. "The walls of the building flew outward. The roof went straight down. Cars were crushed. The roofs of trailers in the loading dock were blown off."