|Cleopatra's Needle in Central Park|
Raynolds said that in its first four years in New York, large sheaths of granite came loose from the surface of Cleopatra's Needle. An additional 780 pounds of stone were lost when a waterproofing company tried to stop the decay with a creosote and paraffin treatment in 1884. But the last major study of the monument, conducted by the Metropolitan Museum in 1983, found that the rate of decay had stabilized. The Parks Department says now there is no significant ongoing erosion on the obelisk.
"And yet, you know there are still signs that there's some gradual erosion occurring on the surface," Raynolds said, adding that you can see patches of decay where the obelisk's native pink color appears on the surface of the stone.
So the monument is eroding, but the very eroded sections were done initially when the monument was first in New York. Mark Durney did some searching of the New York Times archives and found something similar:
So it certainly would not hurt to continue to study the conditions in New York, and the steps which can be taken to minimize damage, but my initial guess was correct. Zahi Hawass was making unfounded allegations to continue to press for the repatriation of objects. He may have a good claim for a number of objects, but that argument loses its steam when you make the same urgent calls for every object which originated in Egypt, irrespective of the circumstances surrounding its removal. Many of these individual objects carry unique circumstances, and all sides in these contentious arguments would be well-served to avoid premature or overly critical concerns.
[I]in May 1914, the Central Park commissioner with the help of Columbia University's James Kemp and the Metropolitan Museum of Art's William Kuckro began extensive restorative work on the obelisk during which they removed a paraffin layer, which was added soon after the obelisk's erection, and they added a new waterproof coating. At this time the obelisk's condition was described as "scaling on all sides," and, "in some sections the shaft was blank for several feet." The NYTimes' description from 1914 appears to appropriately describe the damage, or deterioration, similar to that which is depicted in photographs on Hawass's blog.