Plant Operator (Wash Plant)

Martin Marietta Materials, Inc.; Clarkdale (AZ); On-site; USD 30,307 - 38,572; Full time

Benefits offered by this job

Medical

Vision

401(k) matching

Pension

Vacation

Job summary

Martin Marietta Materials, Inc. seeks a Plant Operator to support mining and aggregate production operations. Reporting to the Plant Manager and Supervisor, you will safely operate, monitor, and maintain plant processing equipment, perform daily inspections, report defects, and manage wear-item inventory at the plant site.

You will help achieve production goals and keep a clean, safe work environment while following MSHA and company safety policies.

Qualifications

• High school diploma or GED (or equivalent) is required.
• Mechanical and technical aptitude to operate and troubleshoot plant equipment.
• Strong attention to safety, time management, and documentation.

Responsibilities

• Start, monitor, and regulate crushers, screens, conveyors, feeders, and pumps per safety standards.
• Adjust process settings to maintain material flow and quality.
• Operate mobile equipment for loadout or cleanup tasks.
• Perform pre-shift inspections and document daily reports.
• Conduct preventative maintenance tasks such as greasing, cleaning, and belt changes.
• Identify malfunctions and safely shut down equipment during emergencies.

Skills

Mechanical aptitude

Technical aptitude

Plant components knowledge

Critical thinking

Time management

MSHA compliance

Effective communicator

Education

HS diploma or GED

Job description

As a Plant Operator at Martin Marietta,youwillplay a pivotal role in supporting our mining and aggregate production operations. Working under the direction of the Plant Manager andSupervisor, 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. Youwillbe instrumental in achieving production goals by ensuring consistent, quality aggregate output andmaintaininga clean, secure work environment.

KEY DUTIES AND RESPONSIBILITIES

• Start,monitor, and regulate crushers, screens, conveyors, feeders, and pumps in compliance with safetystandards.
• Adjust process settings to ensureoptimalmaterial flow and quality in line with job specifications.
• Operate mobile equipment such as skid steers and front-end loaders duringloadout or clean-up tasks.
• Conduct pre-shift and ongoing inspections of plant and mobileequipment,document daily reports accurately.
• Perform preventative maintenance tasks like greasing, cleaning, screen changes, belt splicing, and bearing or pulley replacements.
• Identifymalfunctions 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.
• Assistin training new or temporary staff on equipment operation and safety procedures.
• Take onadditionalduties—cleaning, quality control, rail loading—as assigned bymanagement.
• Maintain daily production reports, recording activity levels, downtime, and material inventory.
• Ensure compliance with environmental regulationsregardingbatch plant operations and dust control.

Education

High School Diploma, GED, or equivalent work experience

Work Experience

No prior experience isrequired; 6 months–1 yearof experience inAggregatePlantOperations or similarHeavyBuildingMaterials industry, preferred.

Knowledge, Skills, and Abilities

Mechanical aptitude

Technical aptitude

Knowledgeable of plant components

Critical thinking

Time management

MSHA compliance andregulations

Effectivecommunicator (writtenand 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 tomaintainthree 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 depthperceptionwith or without seeing aid for distances up to 150 feet.

Working Conditions

All duties require outside assignmentsand requireperiods of work in all weather conditions, cold, wet,dryand dusty. Must be able to work in areas where noise levels are up to 85dbs.

Disclaimers

In addition to the primary responsibilities outlined, the successful candidate may be expected to take on other tasks and assignments asrequired, 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.

A member of the S&P 500 Index, Martin Marietta is an American-based company and a leading supplier of heavy building materials – including aggregates, cement, ready-mixed concrete and asphalt. Through a network of operations spanning 28 states, Canada and the Bahamas, dedicated Martin Marietta teams supply the foundational resources upon which our communities thrive. Martin Marietta'sMagnesia Specialtiesbusiness produces high-purity magnesia and dolomitic lime products used worldwide in environmental, industrial, agricultural and specialty applications.

At Martin Marietta, we strive to work with the best and the brightest – those who have the potential to become our company\'s future leaders. Each of our roughly 9,500 people shares a common purpose regardless of their professional role or work environment. Together, we utilize our diverse skills and experiences to drive our company and its extraordinary culture forward. Our aim is to build on our foundation of success and help values-driven and hardworking people realize their full potential. When you decide to invest your career in Martin Marietta, you\'ll know what it\'s like to be respected, challenged and rewarded.

In return, we offer a highly competitive benefits package, including:

• Medical
• Prescription Drug
• Vision
• Dependent Care Reimbursement Account
• Wellness Programs
• Employee Assistance Plan
• Paid Holidays and Vacation
• 401(k) with Company matching
• Pension
• Salary Continuation – Short-Term Disability
• Long-Term Disability Options
• Employee Life Insurance
• Business Travel Accident Insurance
• Direct Deposit Payroll
• Educational/Tuition Assistance Plan
• Matching Gift Program
• New Auto Purchase Discount Plans

In addition to the primary responsibilities outlined, the successful candidate may be expected to take on other tasks and assignments asrequired, 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.

At Martin Marietta, we are proud to be an Equal Opportunity Employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.