Conservation-restoration of the Statue of Liberty the seventeenth of December in Washington D.C., titled "French Technical Report on Restoring the Statue of Liberty". The report, written with the assistance of a regional historical architect from the NPS, was an attempt to identify and address the apparent problems associated with the statue. In the report, the consultants took note of what they saw to be the most serious problem affecting the statue: that two predominant sections, the torch-bearing arm and the rest platform at the head level, had corroded significantly. The report also alluded to the corroded girders toward the top of the pedestal and the bottom
Statue of Liberty of the copper skin over decades, leaving two layers of coal tar, originally applied to plug leaks and prevent corrosion. Blasting with baking soda powder removed the tar without further damaging the copper. The restorers' work was hampered by the asbestos-based substance that Bartholdi had used—ineffectively, as inspections showed—to prevent galvanic corrosion. Workers within the statue had to wear protective gear, dubbed "moon suits", with self-contained breathing circuits. Larger holes in the copper skin were repaired, and new copper was added where necessary. The replacement skin was taken from a copper rooftop at Bell Labs, which had a patina that