Breaking news By Bhavna Kaul, Georgina Barnard Cyanco Holding Corporation, the Sugar Land, Texas-based producer of sodium cyanide, has mandated Morgan Stanley to explore a sale, five sources familiar with the situation said. The sale process is at an early stage, some of the sources said, noting that the seller is expected to conduct a narrow sale process. Financial materials have not been distributed to prospective suitors yet, the same sources said.