Reclining in his ministerial penthouse above Conakry, Guinea's ramshackle capital, Mahmoud Thiam exudes satisfaction.
In the 18 months since the west African nation's military-backed government invited the former UBS banker to return home and become mining minister, Mr Thiam has been at the centre of a scramble for Guinea's mineral riches.
“Nothing that we have done is reversible,” says Mr Thiam, on whose watch Brazilian and Israeli investors and a Hong Kong fund have outflanked big western miners including Rio Tinto.
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