A professional who tends hydraulic press that squeezes liquid from crystallized chemical products and compacts material to facilitate melting. Respnsibilities include:

• Shovels crystallized material into basket of press and positions metal disks in layers throughout material in basket.
• Moves levers to raise basket against plunger, squeezing liquid from crystals and compressing crystals into round, layer-like blocks.
• Dumps blocks into heated tank and turns steam valves to melt blocks.
• Starts pumps to transfer resulting liquid for further processing.