BHP Billiton to Halt Bauxite Exploration at Guinea and rsquo;s Boffa Site

9:10 AM EST By Jan. 27 (Bloomberg) — BHP Billiton Ltd. plans to halt bauxite exploration at its Boffa-Santou-Houda site in Guinea, the worlds biggest exporter of the ore, after prices for aluminum dropped, said Jean-Francois David, the companys president…

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