Fine Grind Operator

Heritage Construction + Materials; Portland (IN); On-site; USD 45,000 - 65,000; Full time

Job summary

US Aggregates is seeking a Fine Grind Operator to maintain production, safety, quality, and housekeeping within the plant operations. You will join a team-focused crew and contribute to a safe, productive work environment.

Responsibilities include material preparation, quality checks, equipment inspections, and coordination with mechanics and QA to meet specifications. Flexibility to work various shifts, with attention to detail and strong teamwork essential.

Qualifications

• High School diploma or equivalent is required.
• Ability to read, write, and communicate in English and perform basic math.
• Demonstrated regular attendance and ability to work in a team.
• Welding, torching, and maintenance skills are preferred.

Responsibilities

• Prepare materials for filling bags, trucks, and railcars per specs and quality requirements.
• Verify final product purity and report defects promptly.
• Communicate with customers and haulers to meet needs professionally.
• Conduct daily equipment inspections and ensure MSHA compliance.
• Coordinate daily equipment needs and maintenance with mechanics.
• Receive and store parts, manage paperwork upon receipt.
• Coordinate with Quality Assurance to meet specifications.
• Operate heavy equipment as needed to support production and maintenance.
• Perform plant rounds, monitor processes, and document findings.
• Operate pumps, motors, and feeders to maintain plant conditions.
• Maintain clean, safe facilities and perform light maintenance.
• Suggest safer, more efficient operating methods and cost savings.
• Troubleshoot crushing, screening, and conveying equipment to minimize downtime.
• Report hazards and unsafe conditions per procedures.
• Participate in safety meetings and maintain certifications.

Skills

Attendance

Direction following

English communication

Safety awareness

Teamwork

Flexibility

Detail orientation

Welding/maintenance

Education

High School Diploma or GED

Job description

Build your career at US Aggregates!

The Fine Grind Operator maintains production, maintenance, safety, quality, and housekeeping within U.S. Aggregates’ fine grind plant operations, to keep the plant clean and running efficiently. This role works as part of a team-oriented operations crew and will contribute to a safe and productive work environment.

Essential Functions

• Prepares materials for filling bags, trucks, and/or railcars according to production specifications and quality requirements
• Verifies that final product is free of contamination and foreign particles; reports any quality deficiency or observation to the appropriate team member or supervisor without delay
• Communicates with and assists customers and haulers to ensure their needs are met professionally and efficiently
• Conducts and documents daily equipment inspections, confirming compliance with MSHA regulations and reporting any maintenance needs promptly
• Coordinates daily equipment needs and maintenance schedules, communicating with mechanics to ensure equipment is operational and available for production
• Receives parts and stores them in proper locations on site, and ensures packing slips and paperwork are initialed as received and submitted in a timely manner
• Maintains continuous communication with the Quality Assurance department to verify the plant meets quality requirements and specifications
• Occasionally operates various pieces of heavy equipment as required to support plant production and maintenance needs
• Performs assigned plant rounds, inspecting, monitoring, troubleshooting, performance-testing, and documenting plant processes
• Operates and adjusts plant pumps, motors, feeders, and other equipment to maintain appropriate plant operating conditions
• Maintains clean, orderly, and safe facilities and equipment through routine housekeeping, including shoveling, sweeping, general cleaning, and assigned maintenance or repairs
• Recommends changes to operations that may produce safer work processes, cost savings, or efficiency improvements
• Troubleshoots and repairs crushing, screening, and conveying equipment, minimizing downtime and maintaining production throughput
• Reports hazards, near misses, equipment issues, and unsafe conditions immediately to supervisors, following established incident and hazard reporting procedures
• Participates in safety meetings, toolbox talks, and all required training, maintaining current certifications and compliance documentation
• Promotes a culture of safety and compliance by adhering to company safety policies during mining activities, including abiding by yard rules, safety regulations, and PPE requirement, including complying with MSHA regulations governing mining operations
• Additional duties and responsibilities as assigned, including but not limited to continuously growing in alignment with the Company’s core values, competencies, and skills.

Education Qualifications

• High School or Equivalent required

Skills and Abilities

• Demonstrated ability to maintain regular, dependable attendance and sustain a high level of performance across all assigned responsibilities
• Ability to follow written and verbal directions accurately, complete assigned tasks on schedule, and perform all work in full compliance with company standards, procedures, and regulatory requirements
• Ability to read, write, and communicate in English and apply basic math to complete job-related tasks, documentation, and inventory tracking accurately
• Working knowledge of U.S. Aggregates safety and operating principles, with the ability to participate effectively in safety briefings, job briefings, and all required team communications
• Ability to work effectively as part of a team, take direction, and follow all work rules
• Ability to be flexible to work days, nights, and weekends as required
• Strong attention to detail with a commitment to accuracy in all equipment operations, recordkeeping, and compliance activities
• Skilled in welding, torching, and maintenance preferred

Working Conditions/Physical Demands

• Ability to continuously stand or walk on level or uneven ground for extended periods
• Ability to ascend and descend ladders, stairways, and incline catwalks and work safely at elevated heights as required
• Ability to bend, crouch, and/or kneel at the waist or knees
• Ability to lift, push, pull, shovel, or carry materials and equipment weighing at least 50 pounds
• Must wear all required personal protective equipment (PPE) and comply with all site safety standards at all times
• Ability to work outside the majority of the time and withstand extreme weather conditions, including exposure to hot, cold, wet, humid, and windy conditions

About US Aggregates

US Aggregates is a privately held, family-owned business headquartered in Indianapolis. With over 20 operations across Indiana, US Aggregates has been a customer-focused, innovative provider of high-quality essential stone, sand and gravel used in road construction, site prep and utilities, agriculture and erosion control. The company also specializes in industrial minerals like dolomitic and high-calcium products. Since 1967, US Aggregates has built a reputation for prioritizing safety, quality and community. US Aggregates is a part of The Heritage Group’s family of companies. Learn more at https://www.usagg.com.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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