Plant Operator I

00002 Martin Marietta Materials, Inc.; Clarkdale (GA); On-site; USD 25,000 - 39,000; Full time

Job summary

Martin Marietta is seeking a Plant Operator to support our mining and aggregate production operations. Under the Plant Manager and Supervisor, you will safely operate, monitor, and maintain plant processing equipment, perform inspections, report defects, and manage wear-item inventory to ensure consistent output and a clean work environment.

The role emphasizes safety, adherence to MSHA standards, and teamwork as you train staff and contribute to achieving production goals across multiple shifts

Qualifications

• Education: High school diploma or GED or equivalent work experience.
• Experience: No prior experience required; 6 months–1 year in aggregate plant operations preferred.
• Skills: Mechanical/technical aptitude and ability to follow MSHA safety rules.

Responsibilities

• Start, monitor, and regulate crushers, screens, conveyors, feeders, and pumps per safety standards.
• Adjust process settings to ensure optimal material flow and quality.
• Operate equipment such as skid steers and front-end loaders for load out or cleanup.
• Perform pre-shift inspections and document daily reports.
• Conduct preventative maintenance like greasing, cleaning, belt changes, and bearing replacements.
• Identify malfunctions, shut down equipment safely, and request repairs.
• Maintain a tidy work area and manage spillage and dust around equipment.
• Follow MSHA and company safety policies and wear PPE.
• Communicate with supervisors and teammates to ensure efficiency and safety.
• Assist in training new staff on operation and safety procedures.
• Take on additional duties as assigned, including quality control and rail loading.
• Maintain daily production reports, uptime, downtime, and material inventory.
• Ensure compliance with environmental regs for batch plant operations and dust control.

Skills

Mechanical aptitude

Technical aptitude

Critical thinking

Time management

MSHA compliance

Effective communicator

Education

High School Diploma / GED

Job description

JOB SUMMARY

As a Plant Operator at MartinMarietta, you will play a pivotal role in supporting our mining and aggregate production operations. Working under the direction of the Plant Manager and Supervisor, you'll be responsible for safely and efficiently operating, monitoring, and maintaining plant processing equipment; tasks including but not limited to—observing visual and auditory signals during operation, performing routine daily inspections of plant and mobile equipment, reporting defects to the supervisor, as well as maintaining and managing inventory levels of various wear items used throughout the plant site. You will be instrumental in achieving production goals by ensuring consistent, quality aggregate output and maintaining a clean, secure work environment.

KEY DUTIES AND RESPONSIBILITIES

• Start, monitor, and regulate crushers, screens, conveyors, feeders, and pumps in compliance with safety standards.
• Adjust process settings to ensure optimal material flow and quality in line with job specifications.
• Operate mobile equipment such as skid steers and front-end loaders during load out or clean-up tasks.
• Conduct pre-shift and ongoing inspections of plant and mobile equipment, document daily reports accurately.
• Perform preventative maintenance tasks like greasing, cleaning, screen changes, belt splicing, and bearing or pulley replacements.
• Identify malfunctions or blockages, safely shut down equipment during emergencies, and initiate work requests for repairs.
• Maintain a tidy work area—clear spillage, dust, and debris around equipment and haul roads.
• Adhere to all MSHA and company safety policies, including proper PPE use.
• Communicate effectively with supervisors and teammates to ensure efficient workflow and safety compliance.
• Assist in training new or temporary staff on equipment operation and safety procedures.
• Take on additional duties—cleaning, quality control, rail loading as assigned by management.
• Maintain daily production reports, recording activity levels, downtime, and material inventory.
• Ensure compliance with environmental regulations regarding batch plant operations and dust control.

QUALIFICATIONS

Education High School Diploma, GED, or equivalent work experience

Work Experience No prior experience is required; 6 months – 1 year of experience in Aggregate Plant Operations or similar Heavy Building Materials industry, preferred.

Knowledge, Skills, and Abilities Mechanical aptitude Technical aptitude Knowledgeable of plant components Critical thinking Time management MSHA compliance and regulations Effective communicator (written and spoken)

ADDITIONAL DETAILS

Physical Requirements

• Must be able to lift and carry up to 50 lbs. for plant maintenance and equipment servicing.
• Required to bend, stoop, climb, and reach.
• You must be able to maintain three points of contact when climbing on/off machinery or on ladders.
• Strong hand-eye-foot coordination is essential for operating hand/foot controls.
• You must have good depth perception with or without seeing aid for distances up to 150 feet.

Working Conditions

All duties require outside assignments and require periods of work in all weather conditions, cold, wet, dry and dusty. Must be able to work in areas where noise levels are up to 85 dbs.

Disclaimers

In addition to the primary responsibilities outlined, the successful candidate may be expected to take on other tasks and assignments as required, including but not limited to duties outside the typical scope of the role to support overall team operations and organizational needs. Flexibility and adaptability to evolving job demands are essential.

Every member of our ONE Martin Marietta team is driven by our shared values of safety, integrity, excellence, community and stewardship. We are a member of the S&P 500 Index and a leading supplier of aggregates and heavy building materials. Through a network of operations spanning 29 states, Canada and the Bahamas, our teammates supply the foundational resources on which our communities thrive and grow. Our Specialties business provides high-purity magnesia and dolomitic lime products used worldwide in environmental, industrial, agricultural and specialty applications. In a world that's focused on the power of many, we believe in the power of ONE – the magic of bringing together our unique perspectives, experiences and talents to evolve a shared vision and future. Our backgrounds may vary, but our voices come together in support of the same goals. We want to build legacies for ourselves and our loved ones, strengthen our communities and safely and responsibly engage in work we know will make a difference.