About this role
Job Title: Preloader & Relief Operator
Why consider a career at MLC?
MLC was recognized by Newsweek as one of America’s Greatest Workplaces in 2025.
- Highly collaborative work environment focused on growth and innovation
- Safety and sustainability are top priorities
- Excellent compensation, benefits, generous perks; focused on employee wellbeing
- Great development and advancement opportunities
- Bring your real self to work, come grow with us!
MLC operates the largest lime facility in the Americas and mines some of the purest limestone reserves in the world…and we are global! The company is committed to development and employee satisfaction. Join our outstanding team!
About the Job
The Preloader & Relief Operator position is an hourly position that is responsible for operating Pneumatic Trucks around the plant site, dropping and hooking up trailers to the tractor, loading trailers with Quicklime and Hydrated Lime for immediate delivery as well as preloading trailers for future pickup. This position is also responsible for operating the computer-controlled hydration system and related equipment and maintaining product quality by performing various lab testing when the Process Technician is not available.
- Operate a tractor/trailer.
- Load product into designated trailers.
- Maintain a safe and clean working environment.
- Must be able to get on top of trailers during loading process.
- Operate a railcar mover, bobcat and forklift. Operate a trans loader to unload railcars into trailers.
- Provide paperwork to the office on loaded trailers.
- Communicate with the carriers and office to schedule loads.
- Work with production crews as needed. Performs/Assists with Process Technician duties.
- Perform other duties as assigned.
Required Qualifications
- Education: High School Diploma or Equivalent required.
- Experience: 1+ year of relevant experience required.
- Skills: Proficient with a computer and strong communication. Simple math skills.
- Licenses: Valid Driver’s License required.
- Schedule: Willingness to work shift work and work some weekends.
- Abilities: Must be able to climb ladders and stairs without a fear of heights.
The Fine Print
Benefits and perquisites may vary based on the nature and location of each job.
Click here for MLC EEO information
About MLC
MLC, headquartered in St. Louis, Mo., is a leading global supplier of high-calcium lime products and technical solutions. These offerings bring essential performance and value to a broad range of market applications, including metals, construction, chemical synthesis, water and emissions treatment, glass, textiles, plastics, rubber, agriculture, foods and beverages. With over a century in business, MLC has built a reputation on the quality of its products and services, as well as an unwavering commitment to safety, sustainability and service. The company’s expanding global footprint includes a diversified, reliable network of production and distribution facilities in the U.S., as well as in the UK through our Singleton Birch business. For more information, visit https://www.mlc.com/.
Other facts
About MLC
With over a century in business, MLC (formerly Mississippi Lime Company) has built a reputation on the purity of its products, commitment to research and development, and tradition of customer satisfaction. MLC operates the largest lime facility in the Americas and mines some of the purest limestone reserves in the world.
The company supplies high-calcium quicklime, hydrated lime, calcium carbonate products, trucking services, and technical solutions from a diversified, reliable network of facilities in Ste. Genevieve, MO; Calera, AL; Verona, KY; Vicksburg, MS; Weirton, WV; Chester, SC; Mobile, AL; Prairie du Rocher, IL; Bridgeville, PA; as well as several distribution sites throughout the country.
MLC is a privately held company that has a fully integrated system for mining limestone and manufacturing high-quality, food-grade calcium products and pulverized limestone. MLC also owns and operates a trucking and logistics subsidiary, MLC Trucking, to further support customer needs and ensure additional supply security.
What you'll do
- The Preloader & Relief Operator is responsible for operating pneumatic trucks, loading trailers with lime products, and maintaining product quality through lab testing. The role also involves communication with carriers and assisting production crews as needed.
Ready to join MLC?
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