Quality Control Technician (Aggregate)

P&K Stone LLC; Chico (TX); On-site; USD 30,000 - 36,000; Full time

Benefits offered by this job

Paid time off

401(k)

LTD coverage

GT Life Insurance

Job summary

P&K Stone LLC in Texas is seeking a Quality Control Technician to perform hourly aggregate testing and field sampling in a fast-paced quarry environment.

You will document results, help adjust plant settings, and ensure compliance with state specs and internal standards. The role emphasizes safety, traceability, and clear communication with plant personnel.

This hands-on position includes lifting and moving heavy samples (50+ pounds) and working in varied outdoor conditions.

Qualifications

• Ability to conduct hourly testing of aggregate materials to ensure compliance with quality, gradation, and size specifications.
• Proficiency in operating and maintaining laboratory equipment, including scales, shakers, ovens, and Mary Ann sieves.
• Skill in safely collecting field samples from quarry sites, stockpiles, and production areas.
• Competence in accurately recording, entering, and reporting test results using spreadsheets, Word documents, and email.
• Strong communication skills to collaborate effectively with coworkers, production staff, and management regarding quality issues or material adjustments.
• Ability to maintain a clean, organized, and compliant laboratory and workstation.
• Effective time management and prioritization to meet testing schedules and production demands.

Responsibilities

• Conduct hourly testing of aggregates (gradation, moisture, specific gravity).
• Operate and calibrate laboratory equipment (shakers, ovens, scales, Mary Ann sieves).
• Collect representative samples from quarry faces, stockpiles, and production sites.
• Document test results in spreadsheets and databases; generate quality reports.

Skills

Hourly testing

Lab equipment operation

Field sampling

Data entry & reporting

Communication

Safety & PPE

Time management

Tools

Mary Ann sieves

Scales

Ovens

Job description

Under limited supervision, the Quality Control Technician conducts hourly testing of aggregate products to verify compliance with quality and size specifications. This position requires in-depth knowledge of aggregate materials, testing procedures, and the ability to work efficiently in a fast-paced quarry environment. Key responsibilities include accurate recordkeeping, safe field sampling, and clear communication with plant personnel at P&K Stone.

The position performs routine and specialized testing in accordance with state specifications, internal standards, and regulatory requirements.

Aggregate Testing & Analysis

• Perform hourly gradation testing on aggregates, including sieve analysis, moisture content, specific gravity, and other quality indicators.
• Operate and calibrate laboratory equipment such as mechanical shakers, ovens, scales, pycnometers, and Mary Ann testing apparatus.
• Properly label, prepare, and store samples to ensure traceability.
• Conduct specialized tests as required by project specifications or state agencies

Field Sampling

• Collect representative samples from quarry faces, stockpiles, conveyor belts, and production sites using proper sampling techniques.
• Maintain awareness of quarry operations and terrain hazards to ensure safe sampling.
• Communicate sampling results or concerns promptly to plant personnel.

Data Management & Reporting

• Accurately document all test results in spreadsheets, digital forms, and quality databases.
• Prepare and distribute daily, weekly, or project-specific quality reports.
• Identify trends or inconsistencies in material gradation and recommend corrective actions.
• Maintain organized files and logs for audits and compliance.
• Work directly with production teams to address material inconsistencies and help adjust plant settings as needed.
• Communicate any quality issues promptly to minimize waste, rework, or non-conforming products.
• Participate in team meetings, safety briefings, and training sessions.

Quality & Compliance Standards

• Assist with maintaining the laboratory in compliance with state certification programs and internal quality assurance procedures.
• Support audits or inspections by regulatory agencies or customers.

General Responsibilities

• Keep the laboratory, equipment, and workstations clean, calibrated, and properly maintained.
• Prioritize workload based on production demands and deadlines.
• Help train new team members or temporary staff in testing and sampling procedures.
• Follow all safety policies, wear required PPE, and report hazards immediately.

The duties described above are not inclusive. Additional duties may be permanently assigned or required from time to time due to the need to respond to customer needs and remain competitive in the marketplace.

Minimum Knowledge, Skills, and Abilities Required

Work environment characteristics described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Ability to conduct hourly testing of aggregate materials to ensure compliance with quality, gradation, and size specifications.
• Proficiency in operating and maintaining laboratory equipment, including scales, shakers, ovens, and Mary Ann sieves.
• Skill in safely collecting field samples from quarry sites, stockpiles, and production areas.
• Competence in accurately recording, entering, and reporting test results using spreadsheets, Word documents, and email.
• Strong communication skills to collaborate effectively with coworkers, production staff, and management regarding quality issues or material adjustments.
• Ability to maintain a clean, organized, and compliant laboratory and workstation.
• Effective time management and prioritization to meet testing schedules and production demands.

Physical Demands & Work Environment

• Quarry field setting with rock piles, slopes, uneven terrain, and moving equipment. Must be able to climb, bend, balance, and safely collect samples in these conditions.
• Ability to lift, carry, and transport materials and equipment weighing 50+ pounds on a frequent basis.
• Regular standing, walking, bending, climbing, and balancing while performing sampling tasks.
• Exposure to varying weather conditions, including heat, cold, rain, wind, and dust.
• Extended periods of sitting while driving or operating sampling vehicles.
• Quick reflexes and strong situational awareness to avoid hazards in active quarry areas.

Physical Requirements:

• Ability to lift and transport aggregate samples, sieves, buckets, and equipment weighing 50+ pounds.
• Frequent movement between laboratory and production areas, including standing and walking.
• Extended sitting during operation of motorized vehicles.
• Maintain alertness and quick reflexes to ensure safety in dynamic environments.

Vision & Hearing:

• Normal visual range (with or without correction) to read screens, instruments, and printed documents.
• Normal hearing range (with or without correction) to communicate effectively and detect safety signals.

Salary Range: $22.00 - $26.00 per hour

• Paid time off
• 401(k)
• LTD coverage
• GT Life Insurance

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.