Wash Plant Operator & Maintenance Specialist

Martin-Marietta-1798b2fd; Idaho Springs (CO); On-site; USD 36,000 - 48,000; Full time

Job summary

Martin Marietta is seeking a Plant Operator to support mining and aggregate production at our Colorado operations. You will safely operate, monitor, and maintain plant equipment, inspect and report defects, and manage wear-item inventories to ensure consistent, quality output.

You will start and regulate crushers/conveyors, adjust process settings, operate light mobile equipment, perform preventive maintenance, and keep a clean, safe work environment while documenting production data.

Qualifications

• High School Diploma, GED, or equivalent work experience.
• No prior experience required; 6 months–1 year of experience in Aggregate Plant Operations or similar Heavy Building Materials industry, preferred.
• MSHA compliance and regulations

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 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.

Skills

Mechanical aptitude

Technical aptitude

Knowledge of plant components

Critical thinking

Time management

MSHA compliance

Effective communicator

Education

High School Diploma

GED

Equivalent work experience

Job description

Martin Marietta is seeking a Plant Operator to support mining and aggregate production at our Colorado operations. You will safely operate, monitor, and maintain plant equipment, inspect and report defects, and manage wear-item inventories to ensure consistent, quality output.

You will start and regulate crushers/conveyors, adjust process settings, operate light mobile equipment, perform preventive maintenance, and keep a clean, safe work environment while documenting production data.