What We’ve Built Says Everything

On this site, we set tanks, pumps, and air/nitrogen stations, and we take care of all our own measurements, pipe fabrication, and installation. Our piping work includes stainless steel, threaded carbon, PVC, and CPVC. We also rebuild and restore existing equipment when needed — including full teardown, cleaning, repainting, and reassembly of older pumps to extend their service life.

Geofortis Pozzolan Plant – Tooele County, UT Lee Mechanical proudly led the construction of the first Cemengal Plug & Grind XTREME modular grinding mill in North America. Located in Tooele County, Utah, this facility will produce over 300,000 tons of pozzolan annually—supporting cleaner, more sustainable concrete production. Despite international shipping delays and last-minute design changes, our team delivered the project on an aggressive schedule with zero safety incidents. This milestone project reflects our ability to lead complex installations and drive innovation in the cement and materials industry.

Project Spotlight: Geofortis Pozzolan Plant – First Cemengal Mill in North America

Pioneering Modular Grinding Technology in the U.S.

Lee Mechanical Contractors proudly led the construction of the first-ever Cemengal “Plug & Grind XTREME” modular mill system installation in North America for Geofortis Utah. Located on a 7-acre site in Tooele County, Utah, this groundbreaking facility is designed to produce over 300,000 tons of pozzolan annually — a key supplementary cementitious material for the concrete industry.

As a Cemengal-certified U.S. installer, Lee Mechanical was uniquely qualified to manage the complex erection of the modular mill, which was manufactured in Spain and shipped in segments to the U.S. The team overcame numerous logistical challenges, including international shipping delays due to COVID-19, last-minute design adjustments, and site-specific issues.

Scope of Work Highlights:

· Erection and installation of Cemengal Plug & Grind modular mill system

· Structural, mechanical, and electrical installation of the drying system, conveyors, dust collection, and storage components

· Integration of mill components including feed systems, baghouse, separators, bucket elevator, and control piping

· Installation of supporting utilities: compressed air, natural gas, and water systems

Project Milestones:

· First Cemengal modular grinding system installed in the U.S.

· Overcame COVID-related shipment delays and design complications

· Completed in 10 months with zero recordable safety incidents

Despite tight timelines and a compressed schedule due to delayed equipment arrival, Lee Mechanical’s team executed the project with precision and professionalism. By rapidly adapting erection procedures in coordination with Cemengal, the installation was completed more efficiently than any previous Plug & Grind system installation worldwide.

This project showcases our commitment to innovation, safety, and client satisfaction — and marks a significant step forward in the modernization of cement processing infrastructure in North America.

As part of one of the largest cement plant upgrades in the region, we were proud to lead the mechanical installation of two finish mill circuits and the full product handling systems. This project demanded precision rigging, multi-level structural work, and seamless coordination with Heidelberg’s engineering teams. Delivered safely, on time, and to spec—this project is a strong example of the complex industrial work our team executes with confidence and craftsmanship.

Project Spotlight: Cement Finish Mill Installation

Client: Heidelberg Materials
Location: Mitchell, Indiana
Industry: Cement Production / Industrial Mechanical Contracting

Scope of Work:
As part of Heidelberg Materials’ new state-of-the-art cement production line in Mitchell, IN, our team was selected to execute the mechanical installation of two (2) new cement finish mill circuits and integrated product handling systems. This project represents one of the largest cement plant upgrades in the region.

Key Deliverables:

Full mechanical installation of two finish mill circuits

Installation of precision material handling systems (conveyors, chutes, transfer points)

Rigging and setting of large-scale industrial components including separators, gearboxes, and motor assemblies

Coordination with structural, electrical, and controls teams to meet aggressive scheduling milestones

Quality assurance checks and start-up support

Project Highlights:
[Seen below in the image gallery]

Extensive use of heavy rigging to maneuver massive equipment into tight installation zones

Multi-story structural steel platforms supporting complex mechanical assemblies

Precision alignment and bolting of drive trains, hoppers, and chute transitions

Collaborative fieldwork with Heidelberg engineers to ensure seamless integration

Clean, professional craftsmanship visible across all mechanical systems

Challenges & Solutions:
This project presented significant logistical and coordination challenges due to the scale and complexity of the equipment. Our team overcame these through advanced planning, detailed 3D modeling reviews, and leveraging skilled trades with experience in heavy industrial installations. Safety, accuracy, and schedule adherence remained the top priorities throughout.

Result:
The project was delivered with zero safety incidents, on schedule, and in alignment with Heidelberg’s operational objectives. Our successful execution of this critical component of the new production line reinforces our commitment to excellence in large-scale mechanical contracting.

CertainTeed – Structural Steel Installation (Palatka, FL)
Lee Mechanical was contracted by CertainTeed to fabricate and erect the structural steel for a new mill and formulation building at their gypsum facility in Palatka, Florida. This large-scale effort included the installation of structural columns, beams, bracing, stairs, handrails, checker plate decking, and elevated work platforms—designed to support heavy process equipment and plant operations. Delivered under aggressive deadlines and relentless weather, this project showcased our team’s capabilities in heavy industrial steel erection and our commitment to quality, safety, and schedule adherence on fast-track builds.

Gyptech – Equipment Installation (Palatka, FL)
Following the structural build-out, Lee Mechanical was awarded a second contract from Gyptech to install the full suite of mechanical equipment for CertainTeed’s expanded gypsum processing line. The scope included installation of silos, screw conveyors, bucket elevators, dust collection systems, feed systems, bin vents, instrumentation tie-ins, and support piping across multiple building zones. The project demanded precise sequencing, tight coordination with international OEMs, and flexible field execution to accommodate phased deliveries and evolving site conditions. Our team completed the complex installation safely and efficiently reinforcing our reputation as a trusted partner in critical path equipment work.

Combined

CertainTeed/Gyptech – Palatka, FL
Lee Mechanical was selected for two integrated contracts supporting a major expansion at the CertainTeed gypsum plant in Palatka, FL. Under CertainTeed, we fabricated and erected structural steel for the new mill and formulation buildings. Under Gyptech, we completed the full mechanical installation of complex Gyptech-supplied processing equipment—including silos, conveyors, feeders, dust collectors, and day bins—across multiple production areas. Despite tight schedules, evolving designs, and international coordination, our team executed both scopes with precision, professionalism, and a commitment to safety.

Lee Mechanical Contractors is responsible for maintaining all essential equipment in the plant to ensure it continuously runs.

Key items of maintenance include crusher, reclaimer, raw mill, coal mill, both finish mills, silos, bag houses, kiln, conditioning tower, and preheat tower.

Tasks range from replacing or rebuilding gearboxes, motors, entire drive systems, hydraulic systems, pneumatic systems, and maintaining conveyor systems.

All essential systems have a weekly down day for maintenance and preventative maintenance.

Other responsibilities include site safety measures, whether it’s building and installing guards, ladders, or repairing existing handrails. Lee Mechanical also provides 24/7 on-call for emergency breakdowns.