A professional who tends machine that mixes wood chips and glue preparatory to extruding particleboard. Respnsibilities include:

• Pulls lever to admit dried chips from storage bins into rotary batch mixer.
• Weighs resin glues and catalyst material according to formula and pours materials into mixer.
• Verifies moisture content of chips by feeling chips with hand or by weighing sample of chips, drying sample in miniature oven, computing weight of moisture removed, and converting weight to percentage, using mathematical tables.
• Adds water to mixture if chips are too dry.
• Notifies drier tender to increase or decrease drier temperature to control moisture content of chips.
• Pulls lever to discharge mixture into extruder hopper.