Lhoist North America (LNA) is now part of Martin Marietta, combining two North American industry leaders with shared commitments to safety, operational excellence, and customer success. During the transition, LNA positions will not be posted on the Martin Marietta careers page. If you are interested in career opportunities located withing the former LNA operational footprint, please use the links below and submit your application.
Latest open positions
Logistics & Transport
Truck Driver
At Lhoist North America, our core values of Respect, Courage, and Integrity are more than words. We respect people, encourage courageous innovation, and uphold integrity in everything we do. If these principles resonate with you, you may find your next great opportunity with us.We believe our people make the difference. That’s why we invest in talent by offering meaningful opportunities to grow your skills, expand your knowledge, and pursue your interests. Our work environment prioritizes safety, fosters collaboration across teams, and embraces inclusion. Here, you’ll be challenged to grow, and you’ll be supported throughout your career journey. Join us and help shape the future of Lhoist North America. POSITION SUMMARY: Load and deliver lime slurry to the customers. Complete Pre/Post Inspections on equipment the ensure DOT regulations are met. We have a pool of drivers hauling product from various terminals and Porta Batch production sites to the customer. RESPONSIBILITIES USA - Texas - New Braunfels
Health & Safety
Safety Supervisor
At Lhoist North America, our core values of Respect, Courage, and Integrity are more than words. We respect people, encourage courageous innovation, and uphold integrity in everything we do. If these principles resonate with you, you may find your next great opportunity with us. We believe our people make the difference. That’s why we invest in talent by offering meaningful opportunities to grow your skills, expand your knowledge, and pursue your interests. Our work environment prioritizes safety, fosters collaboration across teams, and embraces inclusion. Here, you’ll be challenged to grow, and you’ll be supported throughout your career journey. Join us and help shape the future of Lhoist North America.POSITION SUMMARY:The Safety Supervisor will provide direct Health and Safety leadership to the Lowell plant. This role may also provide H&S support to other Minerals plants and terminals and participate on the H&S audit team. RESPONSIBILITIES & EXPECTATIONS: Healt USA - Florida - Ocala
Calcination & Lime Processing
Process Assistant
At Lhoist North America, our core values of Respect, Courage, and Integrity are more than words. We respect people, encourage courageous innovation, and uphold integrity in everything we do. If these principles resonate with you, you may find your next great opportunity with us.We believe our people make the difference. That’s why we invest in talent by offering meaningful opportunities to grow your skills, expand your knowledge, and pursue your interests. Our work environment prioritizes safety, fosters collaboration across teams, and embraces inclusion. Here, you’ll be challenged to grow, and you’ll be supported throughout your career journey. Join us and help shape the future of Lhoist North America. POSITION SUMMARY:The Process Assistant is responsible for day-to-day maintenance throughout the plant, housekeeping in the plant, assist with loading of trucks and railcars, and the removal of lime/limestone waste from the plant to designated dump areas. RESPONSIBILITIES & E USA - Texas - Burnet