Ancient Hindu marvel-Ashoka Iron Piller

Ancient Hindu marvel! Marvelous
For the last 1600 years, the rustless wonder called the Iron Pillar of India, near the Qutub Minar at Mehrauli in Delhi, continues to stay strong!
The pillar, made up of nearly seven tonnes of 98 per cent wrought iron of pure quality, is 7.21 m (23 feet 8 inches) high, with 93 cm buried below the present floor level, and has a diameter of 41 cm (16 inches).
A team at the Archaeological Survey of India also came to the conclusion that the pillar was not cast but fabricated by forging and hammer-wielding lumps of hot pasty iron, weighing 20 to 30 kg, in a step-by-step process. The surface of the pillar retains marks of hammer blows. It is assumed that 120 laborers took a fortnight to complete this daunting task.
Experts at the Indian Institute of Technology, Kanpur, believe that the relatively pure…