Vulcan Specialty Products Rolled Metals: A Global Leader in Magnesium Sheet and Plate Vulcan Specialty Products’ rolled metals operations in Madison, Illinois (USA) are home to the world’s largest magnesium rolling facility. With decades of expertise in magnesium processing, Vulcan produces high-quality magnesium sheet and plate engineered for performance-critical applications across industries such as aerospace, defense, automotive, electronics, and advanced manufacturing.