The company that makes "pink slime" suspended operations Monday at three of four plants where the beef ingredient is made, saying officials would work to address recent public concern about the product. Beef Products Inc. will suspend operations at plants in Amarillo, Texas; Garden City, Kan.; and Waterloo, Iowa, according to Craig Letch, the company's director of food safety and quality assurance. The company's plant at its Dakota Dunes, S.D., headquarters will continue operations. "We feel like when people can start to understand the truth and reality then our business will come back," Letch said. "It's 100 percent beef."