Plant Operator: Precision, Safety & Production Lead

Martin Marietta Materials, Inc.; Idaho Springs (CO); On-site; USD 36,000 - 48,000; Full time

Job summary

Martin Marietta Materials, Inc. is seeking a Plant Operator to support mining and aggregate production. Under the Plant Manager and Supervisor, you will operate, monitor, and maintain plant processing equipment to deliver quality output while keeping a clean, safe work environment.

You will inspect equipment, report defects, manage wear-item inventory, and assist with training new staff. The role emphasizes safety compliance, timely production reporting, and teamwork in a high‑demand plant

Qualifications

• High school diploma or equivalent required.
• No prior experience required; 6 months–1 year in aggregate plant ops preferred.
• Strong mechanical/technical aptitude and knowledge of plant components required.

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 per job specifications.
• 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 repairs requests.

Skills

Mechanical aptitude

Technical aptitude

Knowledge of plant components

Critical thinking

Time management

MSHA compliance

Effective communicator

Education

High School Diploma, GED, or equivalent work experience

Job description

Martin Marietta Materials, Inc. is seeking a Plant Operator to support mining and aggregate production. Under the Plant Manager and Supervisor, you will operate, monitor, and maintain plant processing equipment to deliver quality output while keeping a clean, safe work environment.

You will inspect equipment, report defects, manage wear-item inventory, and assist with training new staff. The role emphasizes safety compliance, timely production reporting, and teamwork in a high‑demand plant