A professional who controls drying tunnels to condition and dry brick, sewer pipe, roofing tile, and other clay products before treatment in kiln. Respnsibilities include:

• Reads production schedule to determine humidity and temperature required for size and type of product to be dried.
• Positions portable blowers in drying aisles to circulate heat and air.
• Closes tunnel doors and starts blowers and heaters to regulate humidity and temperature within tunnel.
• Examines products for cracks indicating excessive drying.
• Reads humidity and temperature gauges, and adjusts speed and dampers on blowers.
• Directs dry-kiln operator helper to cover product with tarpaulin or to flood aisles with water to retard drying process.
• Records gauge reading in logbook.
• May patch damaged products, using patching clay and handtools.
• May control tunnel kiln.