A professional who supervises and coordinates activities of workers engaged in mixing and blending plastics materials according to formulas, screening plastics dough to remove lumps and foreign objects, rolling dough into sheets of specified width and thickness, and inspecting product for conformance to specifications. Respnsibilities include:

• Trains new employees.
• Observes meters, gauges, and recording-instrument charts to verify process specifications.
• Examines product for defects and measures thickness of sheets with micrometer.
• Performs other duties as described under supervisor master title.