Bloomberg reported this week that "a former employee concerned about conditions at the plant" near Philadelphia shared photos with the publication showing "apparent mold, Listeria and other food-safety issues," including improper use of equipment.

The photographs viewed by Bloomberg showed "what appear to be spills, unsafe use of equipment, and mold on walls and ingredient containers," the outlet said, while "spreadsheets, photos and internally prepared reports reveal that foreign materials such as string, metal, wood and plastic have been found in food from the plant at least as recently as last December."