Eurasian Natural Resources Corp, the Kazakh mining group, is set to make a dramatic entry into the top third of the FTSE 100 this week, just three months after it listed in London, in spite of having a free float of less than 25 per cent. ENRC shares have risen more than 80 per cent since they listed at 540p per share in December thanks to the soaring prices of iron ore, aluminium and ferrochrome, the group's main products. Last week ENRC shares peaked at