A professional who tends trolley conveyors that convey icing-dipped cookies to cool and solidify them preparatory to packaging. Respnsibilities include:

• Transports cookies and bowls of icing to other workers in trolley room, using handtruck.
• Weighs icing on scales, records weights, and dumps contents of bowl into reservoirs.
• Starts trolley conveyors and turns knob on rheostat to regulate its speed.
• Turns valve in steam line or starts ventilating fans to adjust temperature of trolley room.