In 2008, Marvin J. Rudolph, who led the group assigned to bring Pop Rocks out of the laboratory and into the manufacturing plant, wrote a history of Pop Rocks development. The book, titled "Pop Rocks: The Inside Story of America's Revolutionary Candy", was based on interviews with food technologists, engineers, marketing managers, and members of Billy Mitchell's family, along with the author's experience. In the book, Rudolph points out that the Turkish company HLEKS Popping Candy flooded the market with popping candy in the year 2000.