SIMON | Aggregate Plant Operator

Simon is a subsidiary of Colas USA with operations throughout Colorado, Nebraska, South Dakota, and Wyoming. We specialize in aggregate, asphalt, and ready‑mix concrete materials production, with expert teams providing high‑quality asphalt paving, concrete, bridge, and utility construction services. Through strong local ties backed by global resources, we focus on quality and value to deliver the best products and services for our clients.

What we do is bigger than construction – it is about connecting communities, building new roads to the future, and keeping the spirit of the pioneers alive and well. To learn more about Simon visit

The Colas USA Family of Companies provides competitive pay, outstanding benefits, career advancement opportunities, professional education, and extensive training for every employee. We pride ourselves on upholding the highest standards of safety, environmental conservation, and ethical conduct as we strive to grow our infrastructure products and services through empowering and developing our people, fostering innovation, utilizing new technology, and maximizing vertical integration at all levels of the company’s value chain.

To learn more about the Colas USA Family of Companies, please visit

Responsible for operation of an aggregate plant/crusher; also supports plant production operations by performing physical work required to maintain consistent operation of plants/equipment; may also operate a variety of equipment, vehicles, and tooling.

• Embrace the Company’s safety culture, actively support all safety initiatives, and adhere to defined accountabilities implemented by the Safety Steering and Continuous Improvement teams
• Support, promote, and practice the Company core values, vision, and mission; follow code of ethics, workplace conduct, safety, and other established policies
• Observe safety procedures, report potentially unsafe conditions, and use equipment and materials properly
• Ensure safe operation of plant and components; monitor plant output and make necessary adjustments in order to meet required production mix, quantities, and deadlines
• Adjust manual and computer‑aided controls to maintain equipment within required operating ranges
• Provide guidance to plant ground crew and equipment operators related to daily operations of plant
• Maintain daily production logs and assist with production and operational reports
• Communicate professionally with others in person, over the phone, and on company radio channels
• Operate heavy and industrial equipment, vehicles, and tools as needed in support of operations
• Perform manual/physical tasks required in plant operation and maintenance activities
• Monitor plant performance and identify operational and/or mechanical issues; report issues and coordinate with management regarding required repair/maintenance to minimize plant downtime
• Assist with minor equipment maintenance and repair, and general plant housekeeping tasks
• Complete other related projects/tasks as assigned

• High school diploma or equivalent preferred
• MSHA certification or ability to acquire certification required
• Valid drivers’ license with ability to maintain a clean driving history required

• 5 or more years previous experience and/or equivalent combination of training/experience in a similar role
• Mechanical skill and experience plant equipment maintenance; basic welding experience a plus
• Proficiency in operation of plant equipment; demonstrated knowledge of plant parts and components
• Proficiency with mobile devices and other technology used in daily operations
• Ability to read and interpret signage and/or written instructions (safety rules, operating and maintenance instructions, procedure manuals, etc.)
• Ability to problem‑solve and recommend solutions
• Ability to work in a team environment
• Ability to interact professionally with others and clearly communicate information

• Wear and maintain personal protective equipment (PPE) as required
• Regularly required to lift and /or move up to 50 pounds with or without assistance
• Regularly required to use hands to feel, handle, and manipulate objects
• Regularly required to…