Description

AGGREGATE TECHNICIAN

Department: Operations

Location: Desert Center, CA

Office Hours/Days: 0700 - 1900 (M-F)

Classification: Full-Time, Non-Exempt

Reports To

Mine Operations Manager

Position Summary

Aggregate Mineral Resource Group, LLC. is seeking a knowledgeable and detail-oriented Aggregate Technician to support aggregate production, sampling, testing, and quality control operations across active quarry and material processing facilities. This position is responsible for conducting aggregate sampling and laboratory testing procedures, ensuring material compliance with Caltrans specifications, maintaining accurate testing documentation, and supporting operational quality assurance initiatives.

The Aggregate Technician will work closely with quarry operations personnel, plant operators, quality control teams, and management to ensure aggregate materials consistently meet required specifications for construction, infrastructure, and roadway applications. This role requires strong technical knowledge of aggregate testing procedures, attention to detail, and the ability to work effectively within active industrial and quarry environments.

The ideal candidate will possess current Caltrans certifications, aggregate testing experience, and a strong understanding of construction materials, laboratory procedures, and field sampling operations.

Responsibilities

· Perform aggregate sampling, testing, and quality control procedures in accordance with Caltrans and industry standards

· Conduct laboratory and field testing of aggregate materials including gradation, moisture content, density, sand equivalent, and other required material tests

· Collect and document representative material samples from quarry, crushing, screening, and stockpile operations

· Maintain accurate testing records, quality assurance documentation, and compliance reporting

· Ensure aggregate products meet Caltrans specifications, project requirements, and customer quality standards

· Collaborate with operations personnel and plant operators to identify and address material quality issues

· Monitor material production trends and communicate quality concerns to operations leadership

· Maintain testing equipment, laboratory instruments, and sampling tools in proper working condition

· Assist with internal audits, quality inspections, and compliance reviews as required

· Coordinate with external inspectors, contractors, vendors, and regulatory personnel during material evaluations and site visits

· Support operational improvement initiatives related to aggregate quality, production consistency, and material performance

· Follow all company safety procedures, MSHA regulations, and environmental compliance standards

· Assist with inventory management of laboratory supplies, testing materials, and operational consumables

· Participate in safety meetings, operational training, and ongoing quality assurance initiatives

· Travel between operational sites as necessary to support testing and inspection activities

Requirements

Qualifications/Knowledge/Critical Skills

· Current Caltrans aggregate testing certifications required

· Minimum 2–5 years of experience in aggregate testing, quality control, construction materials, or quarry operations preferred

· Strong understanding of aggregate production processes, material specifications, and testing procedures

· Knowledge of Caltrans standards, laboratory testing protocols, and quality assurance requirements

· Experience performing laboratory and field testing for aggregate and construction materials

· Familiarity with crushing plants, screening systems, quarry operations, and material processing environments preferred

· Strong attention to detail and ability to maintain accurate documentation and testing records

· Ability to analyze material data and communicate findings effectively to operations personnel and leadership

· Strong organizational, communication, and problem-solving skills

· Proficiency with Microsoft Office and basic reporting systems preferred

· Ability to work independently and manage multiple testing priorities in a fast-paced environment

· Valid driver’s license and reliable transportation required

Physical Demands/Environmental Factors

· Regular exposure to outdoor industrial quarry, aggregate processing, and laboratory environments including dust, noise, vibration, and changing weather conditions

· Frequent standing, walking, bending, climbing, and lifting during sampling and testing activities

· Ability to lift and/or move up to 50 pounds regularly

· Ability to work around heavy equipment, conveyors, crushers, and active production areas safely

· Occasional travel between operational facilities may be required

Work Environment / Position Structure

· This position operates within active aggregate production facilities, quarry operations, and laboratory environments

· The Aggregate Technician works closely with operations personnel, plant operators, quality control teams, contractors, and management

· Daily responsibilities involve both field sampling and laboratory testing activities

· Work schedules may vary depending on production demands, testing requirements, and operational priorities

· The role requires strong attention to detail, operational awareness, and the ability to maintain quality standards within a fast-paced industrial environment

Compensation

The Aggregate Technician position offers competitive hourly compensation ranging from $28.00 to $37.00 per hour commensurate with experience, certifications, technical expertise, and industry background.

In addition, Aggregate Mineral Resource Group, LLC. provides a comprehensive benefits package including medical, dental, and vision insurance, a 401k plan with employer matching, paid time off, and additional company-sponsored benefits. Final compensation will be determined based on certifications, experience, and operational qualifications.

PLEASE NOTE: This job description is not exhaustive and is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee.

Aggregate Mineral Resource Group, LLC. is committed to providing a workplace and culture of respect, diversity, equity, inclusion, and belonging. We are dedicated to ensuring equal employment opportunity without regard to race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. Should you have a disability or specific needs requiring accommodation, please inform us.

Thank you for your interest in opportunities with Aggregate Mineral Resource Group, LLC. We appreciate the enthusiasm and professionalism demonstrated by individuals seeking to join our team.

Please be advised that Aggregate Mineral Resource Group, LLC. does not engage with or entertain solicitations from third-party recruiting firms for our hiring needs. We have a dedicated internal recruitment team managing our talent acquisition process. We kindly request that third-party recruitment firms refrain from submitting candidates for our open positions. Aggregate Mineral Resource Group, LLC. will not consider or entertain candidates represented by headhunter agencies for our current requisitions. Our commitment to fair and equitable hiring practices includes working directly with candidates who apply through our official channels. We believe in fostering a transparent and direct relationship with potential team members.

We appreciate your understanding and compliance with this policy. If you are interested in joining Aggregate Mineral Resource Group, LLC., please visit our official careers page here: EAP, Inc. | Career Center for a list of our current job opportunities and application instructions.

Acknowledgement

Employee signature below constitutes employee's understanding of the requirements, essential functions and duties of the position.

Candidate/Employee Name (Print): ________________________________________________________

Candidate/Employee Signature: ___________________________________________________________

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