Restoration of Henry Benjamin Latrobe’s cathedral masterpiece involved the cataloging, removal, restoration and installation of the restored gates and perimeter fence. Robinson Iron’s crews removed the fence and gate materials while protecting the original granite footing. Lead based coatings were rendered non-leachable with the application of Pre-Tox and removed by blasting. Protective Tnemec finish coatings were applied in the shop and touched-up in the field. Re-installation was accomplished on the original granite footing utilizing Type 304 Stainless Steel Fasteners and Brass Bushings.