Share Email Opening

Plant Maintenance 

Category Aggregate  

This is us…
- Best-in-Class, industry leader with a rich 126-year history
- Largest building materials contributor to some of the West’s biggest construction projects including:
• Intel D1X Fab Buildings
• Nike World Headquarters Expansion
• Amazon Distribution Center
• KOIN Tower
- Recipient of numerous awards for environmental sustainability and energy conservation
- “Family” based company culture with a focus on safety
- Competitive compensation and excellent benefits

Job Summary:

Plant Maintenance is responsible for safe repair, maintenance of mining equipment typically found in an aggregate facility including, but not limited to: cone crushers, jaw crushers, screen decks, material screws, conveyors, pumps, dust collectors, asphalt drums, bins, silos, hoppers. Plant maintenance is expected to complete pre- and post-shift equipment inspections, submit required daily documentation and assist in plant operations as needed. Members of the plant maintenance crew are also expected to perform many other tasks required to safely and efficiently operate a high-production aggregate production facility.


  • Learn and follow all CalPortland policies and procedures
  • Good attendance and punctuality are a must, able to work irregular and extended hours and weekends to complete maintenance, repairs within the facility
  • Proper use of PPE (Personal Protective Equipment) at all times
  • Performs safety/mechanical inspections of the plant and equipment
  • Address any housekeeping issues within the work area
  • Understands and comply with MSHA rules and regulations
  • Proper use of company provided tools and/or own tools to complete repair and maintenance tasks including but not limited to: changing conveyor belts, replacing bearing / pulleys / idlers / v belts, patching / welding / replacing steel on bins, chutes, repairing crushers, repairing screens, repairing crushers, repairing pumps; able to use welder and cutting torches to repair and maintain plant equipment



Position Requirements


High School Diploma or GED equivalent


  • Familiarity with aggregates and construction materials – sand, gravel, crushed rock, etc.
  • Qualified candidate should have some mining experience or other experiences including : welding, fabricating, belt splicing, and/or familiarity working around crushers, screens, sand screws, etc
  • Knowledge of various aggregate plant equipment including hoppers, feeders, conveyors, screens, crushers, and track mounted screens and crushers
  • Swing Shift Position 4:30PM-12:30AM
  • Familiarity with mine site safety rules and regulations.
  • Ability to use various hand tools and equipment as necessary
  • Ability to work outdoors in inclement weather (heat, cold, rain) for shifts up to 12 hours in length. Able to lift up to 50 pounds frequently, up to 100 pounds occasionally, climb stairs/ladders, and walk on uneven or rough terrain
  • Punctual and reliable, with adequate means of transportation to arrive at work when scheduled


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.

Full-Time/Part-Time Full-Time  
Career Level Early to Mid Career  
Years of Experience 1-3  
Position Aggregate Plant Operator  
Number of Openings 1  
Exempt/Non-Exempt Non-Exempt  
Location Santosh Aggregate Plant, Scappoose, OR  
About the Organization We are a diverse company, with rich history and dedicated employees. Our mission today is no different than it was a century ago - Building Value through People, Quality, and Service with Integrity, Technical Expertise, and Commitment to Our Relationships, Reliability, and Environmental Leadership.

At CalPortland, we pride ourselves in maximizing and building upon the efficiencies and strengths of a vertically integrated organization. From cement manufacturing and aggregate processing to ready-mixed concrete operations and construction, CalPortland is dedicated to using all of our resources to make our customers successful.
EOE Statement We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status or any other characteristic protected by law.  

This position is currently not accepting applications.

To search for an open position, please go to


AppOne.comTM   copyrightŠ1999-2020 HR Services, Inc.
Click here for technical assistance.