Job Description:

• 1) Tends machine that mixes ground phosphate with sulfuric acid to produce superphosphate: Pulls levers to open storage tank or hopper and admit materials into weighing hopper of machine.

• 2) Pulls lever to open bottom of weighing hopper and dump materials into mixer.

• 3) Tests sulfuric acid to determine if strength and temperature meet specifications, using hydrometer and thermometer.

• 4) Starts mixer and blends materials for specified time.

• 5) Pulls lever to dump mixed materials into storage pit.

• 6) Records weight of materials mixed.