An October 10, 2012 television program on Nova dealt with Viking swords and their origins. Some of the metallurgical techniques can be traced back to ancient India.
India possessed an advanced knowledge of metallurgy. The pillar known as the Iron Pillar of Delhi, built by Chandragupta II Vikramaditya (375–413), stands at the Red Fort, where it has stood for over 1,700 years, and although made of iron, it has never rusted.
