A professional who performs any combination of following tasks to prepare polysilicon for crystal growing process. Respnsibilities include:

• Operates drilling machine to remove core sample from polysilicon rod for evaluation.
• Breaks polysilicon rod into chunks, using hammer.
• Removes tungsten filament from chunks, using circular saw or drill.
• Immerses polysilicon chunks into series of vats containing chemical solutions to remove contaminants, using steel basket and hoist.
• Breaks chunks of polysilicon into pieces, using hammer, to prepare polysilicon for meltdown in crystal growing process.
• Records production information.