the L, on 13 January 2013 - 09:03 PM, said:
I wonder where Iron pillar of Delhi orginally stand?
The pillar was used as a trophy in the building the Quwwat-ul-Islam mosque and the Qutb complex, that much can be established without a doubt. However R. Balasubramaniam, based on analysis of the metallurgy of the pillar, says it was originally located at the Udayagiri caves, situated near Vidisha in Madhya Pradesh.
Harsh86_Patel, on 14 January 2013 - 09:44 AM, said:
Rust free after so much weathering....
It's so for a reason the corrosion resistance results from an even layer of crystalline iron hydrogen phosphate, forming on the high phosphorus content iron, which serves to protect it, and also the effects of the local Delhi climate, which alternates from wet to dry. I find it a real testament to the skill of ancient Indian blacksmiths.