A professional who performs any combination of following tasks involved in cleaning, sorting, breaking, weighing, and packaging chunks of silicon for crystal growing. Respnsibilities include:

• Sandblasts chunks of silicon or immerses chunks in cleaning tanks to remove contaminants.
• Breaks chunks of silicon into pieces of specified size, using hammer.
• Tests and sorts silicon pieces according to resistivity type and level, using resistivity device or meter.
• Weighs out specified amounts of silicon to prepare charges (specified amounts of materials) for crystal growing process, loads silicon into charge can, and records identifying information on label of charge can.
• May transport charges to crystal growing department.