A professional who tends equipment that pulverizes industrial bort and separates particles into grades of diamond powder. Responsibilities include:

• Pours bort into ball mill and starts machine to grind bort.
• Removes powder from mill and pours it through sieves to separate particles.
• Pours sifted particles into glass tank containing chemical mixture.
• Siphons liquid containing particles from tank after specified time into glass jars.
• Siphons liquid, following settlement of particles, from top of jars.
• Dumps particles onto table and dries them with infrared lamp.
• Weighs and bottles powder and labels containers.