A professional who supervises and coordinates activities of workers engaged in operation of automatic chemical process equipment to produce granular phosphatic fertilizers from raw chemicals, chemical products, and phosphate rock. Respnsibilities include:

• Observes recording instruments, panel lights, and other indicators, and listens for warning signals to verify conformity of process conditions to plant standards.
• Reviews operating records and laboratory test reports to determine specific process conditions and to diagnose malfunctions in equipment.
• Confers with technical personnel to resolve conditions affecting safety, efficiency, and product quality.
• Directs workers to manually regulate process equipment or to shut down equipment during emergency situations, using telephone and radio communication systems.
• Trains workers in new job assignments.
• Performs other duties as described under supervisor master title.