A professional who places condenser on plate supports in front of retort in zinc furnace to collect and condense zinc vapor created by heating ore in retort. Respnsibilities include:

• Charges retort with mixture of ore and coal, using skip-loader.
• Lifts and positions condenser in front of retort, using tongs.
• Seals joint between retort and condenser by spreading finely ground and dampened mixture of coal and loam to prevent escape of zinc vapor.
• Banks mouth of condenser with mixture of coal and ore or waste material to prevent zinc from overflowing while allowing combustion gases to escape.