A professional who performs following duties to facilitate making wallboard (plasterboard). Respnsibilities include:

• Puddles plaster slurry discharged from mixing machine, using puddling stick, and spreads it evenly for feeding into machine that combines slurry and paper into wallboard.
• Observes flow and squeezes flexible discharge nozzle (boot) of mixing machine to prevent formation of lumps in slurry.
• Scrapes hardened slurry from edge guides and smoothing bars.
• Scoops sample of slurry in cylinder, weighs it, and sets sample aside for specified period to determine consistency (slump).
• Places sample under testing needle that drops from specified height and indicates on dial depth of penetration to determine hardness (set) of core.
• Records test results and reports defects to supervisor.
• Clears jams on wallboard machine and cleans work area.
• Participates in splicing paper and in repairing wallboard and mixing machines.