Boeing St. Louis Expansion
icon Mechanical is delivering design-assist mechanical and plumbing for Boeing's landmark 3A Brownleigh expansion near St. Louis Lambert Airport.
- Owner
- GKN Hoeganaes
- Value
- $18,700,000
- Industries
- Industrial
- Manufacturing
- icon's role
- Fabrication & Modular
- Mechanical Construction
- HVAC & Sheet Metal
icon Mechanical served as general contractor for the Heartland Blender and Bonding Project at GKN Hoeganaes' active powder metallurgy manufacturing facility in Gallatin, Tennessee. The project introduced a fully integrated process systems upgrade—including a four-level process tower, chemical mixing systems, dust collection, and blending and bonding infrastructure—while keeping the plant in continuous operation throughout construction.
Executing a complex, multi-system installation without disrupting ongoing production required close coordination between construction and plant operations. icon managed the critical path in real time, phased permit work and pressure testing to protect equipment, and deployed an on-site VDC modeling station to accelerate issue resolution. Weekly coordination meetings kept all teams aligned from start to finish.
Scope of Work
- Facility-wide dust collection system integrated into a four-level process tower
- Six-tank chemical mixing room with external water and glycol systems
- Multi-level blending and bonding systems
- Chilled water system
- Solvent storage piping
- Material handling equipment
- Comprehensive fire water protection
- P&ID revision and final process design
- Full trade coordination in VDC model space
Project Insights
- $18.7M project value · icon served as general contractor
- Constructed entirely within an active, operating manufacturing facility
- On-site VDC modeling station deployed for real-time field coordination
- Scanning technology and point cloud generation used throughout
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