A professional who tends equipment that steams and dries fiber mats to untwist yarns and impart fuller surface to mat. Respnsibilities include:

• Adjusts steam valves to regulate flow of spray on mats.
• Pushes button to start conveyor that moves mats through steam and drying cabinets.
• Loads mats on conveyor and observes thermometers and adjusts controls to maintain specified temperature in cabinets.