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Aggregate Plant Maintenance (Aggregate)

Job Summary

The Mobile Equipment Operator/Plant Maintenance position includes a combination of duties involving the general maintenance and operation of an aggregate plant.  The majority of work performed is outside, in all weather conditions, at an aggregate mine.

  • Complete daily service requirements of the aggregate plant for preventative maintenance issues
  • Fabricate and repair conveyors and hoppers
  • Troubleshoot and resolve maintenance problems to ensure minimal cost and prevent operational delays
  • Repair crusher, i.e. liner changes, oil systems and operations, monitor and change worn parts
  • Repair conveyor systems, i.e. bearing replacement, drive systems, change screen cloths, structural fabrication
  • General maintenance of water pumps and electrical requirements and wear-prevention of equipment
  • Operate mobile equipment including heavy haul trucks
  • General labor duties such as shoveling and sweeping

High school diploma/GED

  • Valid class C commercial driver's license
  • Reliable attendance for varied work shifts including nights and weekends
  • Must be able to work independently and within a team
  • Ability to lift 95 lbs. infrequently, 50 lbs. frequently, and climb ladders/stairs up to 24’
  • Ability to use various electric and air-powered hand, welding, and cutting tools as appropriate
  • Experience in welding and fabrication


  • Familiarity with MSHA regulations
  • Working knowledge of aggregate production and associated equipment; an understanding of operations and safety requirements for equipment
  • Knowledge of the type and quality of materials being produced

At CalPortland, we’re proud to offer a comprehensive, competitive benefits package that provides health and financial support to our most important resources: our employees.  Your benefits are an important part of your overall compensation at CalPortland. That’s why we give you a wide range of benefits to choose from.  All regular full time employees may enroll in a variety of health and welfare plans including medical, dental and vision plans.  Other benefits include life insurance, disability coverage, employee assistance program, and retirement program.  The company also has a variety of voluntary benefits for employees to choose from.

Conditions of Employment

Successful candidate must submit to post-offer pre-employment physical examination, drug/alcohol screen, and background check. Some positions require FMCSA regulated on-going drug and alcohol testing.


Aggregate Plant Maintenance (Aggregate)

Job Req ID:  584
Job Type:  Hourly - Full-Time