Job Description:

• 1) Performs following duties to produce seed cores from silicon crystal ingots for use in crystal growing process: Tends saw that cuts ingot into specified lengths.

• 2) Determines crystal orientation of ingot sections, using x-ray equipment, and draws orientation lines on ingot.

• 3) Positions ingot sections on chuck of drill according to crystal orientation and activates drill that automatically removes seed core from ingot.

• 4) Grinds seed core to smooth rough edges, using sanding machine, and x rays and marks seed core to indicate crystal orientation.

• 5) Tends machine that cuts groove in seed core.

• 6) Cleans seed core to remove contaminants, using ultrasonic and etching equipment.

• 7) Wraps finished crystal in protective paper.

• 8) Records production information.