Aggregate Plant Operator – Safer, Efficient Production

Martin Marietta; Golden (CO); On-site; USD 36,000 - 48,000; Full time

Job summary

Martin Marietta in Colorado seeks a Plant Operator to support mining and aggregate production. You will operate, monitor, and maintain plant processing equipment under the Plant Manager and Supervisor, perform daily inspections, report defects, and manage inventory of wear items to ensure quality output and a safe, clean site.

The role requires a high school diploma or GED, no prior experience is required (6 months–1 year in aggregate plant ops preferred), and adherence to MSHA safety policies.

Qualifications

• High School Diploma, GED, or equivalent work experience.
• No prior experience is required; 6 months–1 year of experience in Aggregate Plant Operations or similar Heavy Building Materials industry, preferred.
• MSHA compliance and regulations; strong mechanical/technical aptitude; good communication and teamwork.

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.
• Operate mobile equipment such as skid steers and front-end loaders during loadout or clean-up tasks.
• Conduct pre-shift and ongoing inspections of plant and mobile equipment; document daily reports.
• 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.
• 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.

Skills

Mechanical aptitude

Technical aptitude

Plant components

Critical thinking

Time management

MSHA compliance

Effective communication

Education

High School Diploma, GED, or equivalent work experience

Job description

Martin Marietta in Colorado seeks a Plant Operator to support mining and aggregate production. You will operate, monitor, and maintain plant processing equipment under the Plant Manager and Supervisor, perform daily inspections, report defects, and manage inventory of wear items to ensure quality output and a safe, clean site.

The role requires a high school diploma or GED, no prior experience is required (6 months–1 year in aggregate plant ops preferred), and adherence to MSHA safety policies.