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New Delhis Iron Pillar has been exposed to the elements for centuries. So why hasnt it ever shown signs of rust? : comparemela.com
New Delhi's Iron Pillar has been exposed to the elements for centuries. So why hasn't it ever shown signs of rust?
New Delhi’s Iron Pillar has long fascinated scientists both at home and abroad. But it wasn’t until 2003 that experts cracked the metallurgical mystery behind this unusual attraction.
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