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Crushing, Grinding, and Polishing Machine Setters, Operators, and Tenders
SOC Code: 51-9021.00

Set up, operate, or tend machines to crush, grind, or polish materials, such as coal, glass, grain, stone, food, or rubber.

Sample of reported job titles: Batch Mixer, Crusher Operator, Cullet Trucker, Fabricator, Grinder Operator, Machine Operator, Mill Operator, Miller, Preparation Operator (Prep Operator), Process Operator

Tasks

  • Observe operation of equipment to ensure continuity of flow, safety, and efficient operation, and to detect malfunctions.
  • Examine materials, ingredients, or products, visually or with hands, to ensure conformance to established standards.
  • Move controls to start, stop, or adjust machinery and equipment that crushes, grinds, polishes, or blends materials.
  • Clean, adjust, and maintain equipment, using hand tools.
  • Weigh or measure materials, ingredients, or products at specified intervals to ensure conformance to requirements.
  • Read work orders to determine production specifications and information.
  • Dislodge and clear jammed materials or other items from machinery and equipment, using hand tools.
  • Tend accessory equipment, such as pumps and conveyors, to move materials or ingredients through production processes.
  • Record data from operations, testing, and production on specified forms.
  • Load materials into machinery and equipment, using hand tools.
  • Clean work areas.
  • Notify supervisors of needed repairs.
  • Transfer materials, supplies, and products between work areas, using moving equipment and hand tools.
  • Reject defective products and readjust equipment to eliminate problems.
  • Inspect chains, belts, or scrolls for signs of wear.
  • Test samples of materials or products to ensure compliance with specifications, using test equipment.
  • Collect samples of materials or products for laboratory testing.
  • Set mill gauges to specified fineness of grind.
  • Mark bins as to types of mixtures stored.
  • Turn valves to regulate the moisture contents of materials.
  • Add or mix chemicals and ingredients for processing, using hand tools or other devices.
  • Break mixtures to size, using picks.

Technology Skills

  • Data base user interface and query software - Data entry software
  • Electronic mail software - Email software
  • Spreadsheet software
  • Word processing software

Tools Used

  • Adjustable wrenches
  • Ammeters
  • Claw hammer - Claw hammers
  • Demolition hammers - Chipping hammers
  • Desktop computers
  • Dollies
  • Ear plugs - Protective ear plugs
  • Forklifts
  • Front end loaders
  • Goggles - Safety goggles
  • Grease guns
  • Hand trucks or accessories - Handtrucks
  • Hold down clamps - Holding clamps
  • Hole saws - Hole cutters
  • Locking pliers
  • Mallets
  • Personal computers
  • Picks
  • Power drills
  • Power grinders
  • Pressure or steam cleaners - Pressurized air cleaners
  • Pry bars
  • Pullers - Comealongs
  • Punches or nail sets or drifts - Hole punches
  • Ratchets
  • Razor knives - Scrapers
  • Screwdrivers - Phillips head screwdrivers; Straight screwdrivers
  • Slings - Material-hoisting slings
  • Socket sets - Socket wrench sets
  • Squares - Layout squares
  • Tape measures - Measuring tapes
  • Track cranes - Overhead cranes
  • Utility knives
  • Weight measuring instrument accessories - Belt scales
  • Wheel loaders - Mini loaders
  • Wire brushes

Knowledge

  • Production and Processing - Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
  • Mechanical - Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
  • English Language - Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar.
  • Public Safety and Security - Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.

Skills

  • Operation Monitoring - Watching gauges, dials, or other indicators to make sure a machine is working properly.
  • Operation and Control - Controlling operations of equipment or systems.
  • Monitoring - Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.
  • Active Listening - Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.
  • Equipment Maintenance - Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.
  • Instructing - Teaching others how to do something.
  • Judgment and Decision Making - Considering the relative costs and benefits of potential actions to choose the most appropriate one.
  • Quality Control Analysis - Conducting tests and inspections of products, services, or processes to evaluate quality or performance.
  • Reading Comprehension - Understanding written sentences and paragraphs in work related documents.
  • Speaking - Talking to others to convey information effectively.
  • Time Management - Managing one's own time and the time of others.
  • Troubleshooting - Determining causes of operating errors and deciding what to do about it.

Abilities

  • Multilimb Coordination - The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion.
  • Arm-Hand Steadiness - The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position.
  • Control Precision - The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.
  • Manual Dexterity - The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.
  • Near Vision - The ability to see details at close range (within a few feet of the observer).
  • Rate Control - The ability to time your movements or the movement of a piece of equipment in anticipation of changes in the speed and/or direction of a moving object or scene.
  • Reaction Time - The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears.
  • Hearing Sensitivity - The ability to detect or tell the differences between sounds that vary in pitch and loudness.
  • Perceptual Speed - The ability to quickly and accurately compare similarities and differences among sets of letters, numbers, objects, pictures, or patterns. The things to be compared may be presented at the same time or one after the other. This ability also includes comparing a presented object with a remembered object.
  • Problem Sensitivity - The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem.
  • Auditory Attention - The ability to focus on a single source of sound in the presence of other distracting sounds.
  • Category Flexibility - The ability to generate or use different sets of rules for combining or grouping things in different ways.
  • Information Ordering - The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations).
  • Far Vision - The ability to see details at a distance.
  • Flexibility of Closure - The ability to identify or detect a known pattern (a figure, object, word, or sound) that is hidden in other distracting material.
  • Oral Comprehension - The ability to listen to and understand information and ideas presented through spoken words and sentences.
  • Oral Expression - The ability to communicate information and ideas in speaking so others will understand.
  • Response Orientation - The ability to choose quickly between two or more movements in response to two or more different signals (lights, sounds, pictures). It includes the speed with which the correct response is started with the hand, foot, or other body part.
  • Selective Attention - The ability to concentrate on a task over a period of time without being distracted.
  • Static Strength - The ability to exert maximum muscle force to lift, push, pull, or carry objects.
  • Trunk Strength - The ability to use your abdominal and lower back muscles to support part of the body repeatedly or continuously over time without 'giving out' or fatiguing.
  • Written Comprehension - The ability to read and understand information and ideas presented in writing.
  • Deductive Reasoning - The ability to apply general rules to specific problems to produce answers that make sense.
  • Finger Dexterity - The ability to make precisely coordinated movements of the fingers of one or both hands to grasp, manipulate, or assemble very small objects.
  • Inductive Reasoning - The ability to combine pieces of information to form general rules or conclusions (includes finding a relationship among seemingly unrelated events).
  • Speech Clarity - The ability to speak clearly so others can understand you.
  • Speech Recognition - The ability to identify and understand the speech of another person.
  • Visual Color Discrimination - The ability to match or detect differences between colors, including shades of color and brightness.
  • Visualization - The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged.

Interests

  • Interest code: RCI
    • Realistic - Realistic occupations frequently involve work activities that include practical, hands-on problems and solutions. They often deal with plants, animals, and real-world materials like wood, tools, and machinery. Many of the occupations require working outside, and do not involve a lot of paperwork or working closely with others.
    • Conventional - Conventional occupations frequently involve following set procedures and routines. These occupations can include working with data and details more than with ideas. Usually there is a clear line of authority to follow.
    • Investigative - Investigative occupations frequently involve working with ideas, and require an extensive amount of thinking. These occupations can involve searching for facts and figuring out problems mentally.

Work Context

  • Wear Common Protective or Safety Equipment such as Safety Shoes, Glasses, Gloves, Hearing Protection, Hard Hats, or Life Jackets - 97% responded “Every day.”
  • Exposed to Contaminants - 79% responded “Every day.”
  • Face-to-Face Discussions - 86% responded “Every day.”
  • Sounds, Noise Levels Are Distracting or Uncomfortable - 87% responded “Every day.”
  • Exposed to Hazardous Equipment - 86% responded “Every day.”
  • Work With Work Group or Team - 43% responded “Extremely important.”
  • Contact With Others - 49% responded “Constant contact with others.”
  • Duration of Typical Work Week
  • Responsible for Others' Health and Safety - 26% responded “Moderate responsibility.”
  • Consequence of Error - 38% responded “Serious.”
  • Frequency of Decision Making - 50% responded “Every day.”
  • Pace Determined by Speed of Equipment - 59% responded “Very important.”
  • Spend Time Standing - 37% responded “Continually or almost continually.”
  • Spend Time Using Your Hands to Handle, Control, or Feel Objects, Tools, or Controls - 31% responded “Continually or almost continually.”
  • Importance of Being Exact or Accurate - 30% responded “Important.”
  • Exposed to High Places - 27% responded “Never.”
  • Letters and Memos - 44% responded “Every day.”
  • Responsibility for Outcomes and Results - 32% responded “Very high responsibility.”
  • Time Pressure - 31% responded “Every day.”
  • Freedom to Make Decisions - 25% responded “Some freedom.”
  • Outdoors, Exposed to Weather - 38% responded “Never.”
  • Telephone - 39% responded “Never.”
  • Indoors, Not Environmentally Controlled - 27% responded “Never.”
  • In an Open Vehicle or Equipment - 37% responded “Never.”
  • Coordinate or Lead Others - 39% responded “Important.”
  • Spend Time Making Repetitive Motions - 39% responded “Less than half the time.”
  • Spend Time Walking and Running - 37% responded “Less than half the time.”
  • Structured versus Unstructured Work - 40% responded “Limited freedom.”
  • Importance of Repeating Same Tasks - 32% responded “Fairly important.”

Education

Percentage of RespondentsEducation Level Required
74%High school diploma or equivalent
16%Some college, no degree
10%Less than high school diploma

Work Styles

  • Dependability - Job requires being reliable, responsible, and dependable, and fulfilling obligations.
  • Attention to Detail - Job requires being careful about detail and thorough in completing work tasks.
  • Cooperation - Job requires being pleasant with others on the job and displaying a good-natured, cooperative attitude.
  • Concern for Others - Job requires being sensitive to others' needs and feelings and being understanding and helpful on the job.
  • Initiative - Job requires a willingness to take on responsibilities and challenges.
  • Self Control - Job requires maintaining composure, keeping emotions in check, controlling anger, and avoiding aggressive behavior, even in very difficult situations.
  • Independence - Job requires developing one's own ways of doing things, guiding oneself with little or no supervision, and depending on oneself to get things done.
  • Persistence - Job requires persistence in the face of obstacles.
  • Integrity - Job requires being honest and ethical.
  • Achievement/Effort - Job requires establishing and maintaining personally challenging achievement goals and exerting effort toward mastering tasks.
  • Adaptability/Flexibility - Job requires being open to change (positive or negative) and to considerable variety in the workplace.
  • Leadership - Job requires a willingness to lead, take charge, and offer opinions and direction.
  • Stress Tolerance - Job requires accepting criticism and dealing calmly and effectively with high stress situations.
  • Analytical Thinking - Job requires analyzing information and using logic to address work-related issues and problems.
  • Innovation - Job requires creativity and alternative thinking to develop new ideas for and answers to work-related problems.
  • Social Orientation - Job requires preferring to work with others rather than alone, and being personally connected with others on the job.

Work Values

  • Support - Occupations that satisfy this work value offer supportive management that stands behind employees. Corresponding needs are Company Policies, Supervision: Human Relations and Supervision: Technical.
  • Relationships - Occupations that satisfy this work value allow employees to provide service to others and work with co-workers in a friendly non-competitive environment. Corresponding needs are Co-workers, Moral Values and Social Service.
  • Working Conditions - Occupations that satisfy this work value offer job security and good working conditions. Corresponding needs are Activity, Compensation, Independence, Security, Variety and Working Conditions.

Wages & Trends

  • Median wages (2017)
    • $17.01 hourly, $35,380 annual
  • Employment (2016)
    • 30,000 employees
  • Projected growth (2016-2026)
    • Decline (-2% or lower)
  • Projected job openings (2016-2026)
    • 3,000

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