# Mixing and Blending Machine Setters, Operators, and Tenders > Set up, operate, or tend machines to mix or blend materials, such as chemicals, tobacco, liquids, color pigments, or explosive ingredients. - Code: 51-9023.00 (O*NET-SOC; SOC 2018 51-9023) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 20 tasks (18 core and 2 supplemental) - Page: https://foundation.org.ai/occupations/51-9023.00 - JSON: https://foundation.org.ai/data/tasks/51-9023.00.json ## What the work is made of 1. Weigh or measure materials, ingredients, or products to ensure conformance to requirements. Core task · Task 12397 · Rated by 54 people who do the job, August 2023 2. Read work orders to determine production specifications or information. Core task · Task 12410 · Rated by 54 people who do the job, August 2023 3. Observe production or monitor equipment to ensure safe and efficient operation. Core task · Task 12402 · Rated by 54 people who do the job, August 2023 4. Mix or blend ingredients by starting machines and mixing for specified times. Core task · Task 20682 · Rated by 54 people who do the job, August 2023 5. Stop mixing or blending machines when specified product qualities are obtained and open valves and start pumps to transfer mixtures. Core task · Task 12403 · Rated by 54 people who do the job, August 2023 6. Compound or process ingredients or dyes, according to formulas. Core task · Task 12411 · Rated by 54 people who do the job, August 2023 7. Examine materials, ingredients, or products visually or with hands to ensure conformance to established standards. Core task · Task 12406 · Rated by 54 people who do the job, August 2023 8. Operate or tend machines to mix or blend any of a wide variety of materials, such as spices, dough batter, tobacco, fruit juices, chemicals, livestock feed, food products, color pigments, or explosive ingredients. Core task · Task 12400 · Rated by 54 people who do the job, August 2023 9. Dump or pour specified amounts of materials into machinery or equipment. Core task · Task 12401 · Rated by 54 people who do the job, August 2023 10. Record operational or production data on specified forms. Core task · Task 12407 · Rated by 53 people who do the job, August 2023 11. Collect samples of materials or products for laboratory testing. Core task · Task 12404 · Rated by 54 people who do the job, August 2023 12. Unload mixtures into containers or onto conveyors for further processing. Core task · Task 12412 · Rated by 54 people who do the job, August 2023 13. Clean work areas. Core task · Task 23983 · Rated by 54 people who do the job, August 2023 14. Add or mix chemicals or ingredients for processing, using hand tools or other devices. Core task · Task 12405 · Rated by 53 people who do the job, August 2023 15. Tend accessory equipment, such as pumps or conveyors, to move materials or ingredients through production processes. Core task · Task 12409 · Rated by 53 people who do the job, August 2023 16. Transfer materials, supplies, or products between work areas, using moving equipment or hand tools. Core task · Task 12408 · Rated by 54 people who do the job, August 2023 17. Clean and maintain equipment, using hand tools. Core task · Task 12413 · Rated by 54 people who do the job, August 2023 18. Dislodge and clear jammed materials or other items from machinery or equipment, using hand tools. Core task · Task 12414 · Rated by 53 people who do the job, August 2023 19. Test samples of materials or products to ensure compliance with specifications, using test equipment. Supplemental task · Task 12398 · Rated by 54 people who do the job, August 2023 20. Open valves to drain slurry from mixers into storage tanks. 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