A professional who assists dry-kiln operator in drying clay products in tunnel. Respnsibilities include:

• Positions fans in drying areas to circulate heated air.
• Closes or opens tunnel room doors.
• Covers product with canvas or sacking.
• Floods aisles with water.
• Adjusts floor furnace to maintain specified temperature and circulation of heat.
• Examines products in tunnel for cracks or other defects.
• Patches damaged products with patching clay, using handtools.
• Brushes paint sealer or drying agent on product to retard evaporation.
• Performs other duties as described under helper master title.