Maintenance Supervisor

JOB SUMMARY

The Maintenance Supervisor at Martin Marietta is a critical leadership role responsible for the end-to-end health of plant assets and the safety of the maintenance team. Acting as a "Guardian Angel" for their crew, the Supervisor ensures that all stationary and mobile equipment—including crushers, conveyors, screens, and pumps—isa maintaintedto maximize uptime and operational efficiency.

The Maintenance Supervisor will coordinate repair and maintenance activities at Martin Marietta’s Spec Agg Quarry in Golden, CO.

This role balances technicalexpertisewith people management, focusing oninitiative-takingpreventive maintenance (PM) strategies and rapid response to mechanical failures. The successful candidate will foster a culture of Safety First, Quality Second, and Production Third, ensuring that every team member returns home safely every day while meeting the company’s rigorous production goals.

• Conduct dailyMSHApre-shift inspections of equipment and work areas toidentifyand mitigate hazards.
• Develop and execute daily and weekly maintenance schedules, prioritizing the maintenance backlog in coordination with the Plant Manager.
• Oversee the repair and optimization of stationary equipment (conveyors, shakers, gearboxes) and mobile fleet assets.
• Mentor junior technicians on safe maintenance practices, including Lock-Out/Tag-Out/Try-Out (LOTOTO).
• Overall responsibility for planning and staffing maintenance crew for a 4
  
  MTPY hard rock quarry.
• Assist Management in the scheduling and timing of repairs to all equipment at the site.
• Monitorplant operations daily to ensure production and QC standards are maintained. Take corrective action when deficiencies occur.
• Monitoring and reporting on safety andproductionKPIs.
• Ensure personnel comply with Federal, State and Company safety and environmental rules and regulations through daily inspections of site, plant machinery, equipment, personalactivitiesand working conditions.
• Develop and nurture empowered/self-directed work teams in all phases of the operation.
• Purchase or direct the purchase of supplies and equipment in accordance with Martin Marietta’s Controllers policies - recommend vendors to reduce costs.
• Coordinate staffing with the Plant Manager and Assistant Plant Manager tooperatethe plant and coordinate the same needs with labor law compliance and affirmative action with the Human Resource Department,properly and safely.
• Supervisory responsibility involving staffing, performance appraisals, training and development, promotions, salary increases, discipline, and motivating staff.
• Assistin the development of the annual human resources business plan and ensure continual development of employees through training, cross-training and other development tools.
• Manage proper inventory levels of parts needed tomaintaintarget uptime.
  
  Inventories include but not limited to screen panels, GET, wear metal, bearings, misc. consumables such as welding rod and torching supplies.
• Maintain operation security.

• High school diploma, GED, or relevant experience

• 4+ years inrelated
  
  Heavy Industrial Maintenance  (Aggregates, Mining, or Construction preferred).

• Production process and methods
• Quality Control methods
• MSHAregulations and compliance
• Critical thinking
• Problem-solving
• EPA
• Resource management
• Effective communicator (written and spoken)

• 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.

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

In addition to the primary responsibilities outlined, the successful candidate may be expected to take on other…