Minerals and Metals in Ancient India v1.c27.s2.t1.4
Minerals and Metals in Ancient India v1.c27.s2.t1.4
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v1.c27.s2.t1.4
Sir Robert Hadfield (1912, 1922 and 1925) first studied the material of the pillar scientifically. A more thorough investigation was presented by Ghosh (1963). Wranglén (1970) has reviewed the various theories for the ‘rustlessness’ of the iron pillar.