Statue of Liberty $350 million in donations. The Statue of Liberty was one of the earliest beneficiaries of a cause marketing campaign. A 1983 promotion advertised that for each purchase made with an American Express card, the company would contribute one cent to the renovation of the statue. The campaign generated contributions of $1.7 million to the restoration project. In 1984, the statue was closed to the public for the duration of the renovation. Workers erected the world's largest free-standing scaffold, which obscured the statue from view. Liquid nitrogen was used to remove layers of paint that had been applied to the interior
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