The world’s top miner BHP Billiton yesterday said half-year net profits surged 72 per cent to $10.52 billion as emerging markets snap up raw materials and the West edges out of its economic slump.

BHP, which was foiled in takeover plans for Canadian fertiliser giant Potash Corp. and an Australian iron ore merger with arch-rival Rio Tinto, also said it would buy back $10 billion in its shares this year.

Chief executive Marius Kloppers said the results came despite BP’s major oil spill in the Gulf of Mexico and several flood disasters, including widespread inundations in northeastern Australia.

The company said its earnings were reduced by $464 million after the United States suspended drilling when a deadly blast aboard the BP-leased Deepwater Horizon rig caused America’s worst ever environmental disaster.

“We are proud of the results, despite things like the Gulf of Mexico events and floods around the world,” Kloppers told a media briefing.

“The portfolio has shown that it performs at record margins, almost record cash flow, and we have done that in a manner which has been safe.”

BHP shares closed 1.63 per cent lower at $46.95. The profits were in line with analyst forecasts.

The company said supply problems had buoyed prices for its products, which notably include coal and iron ore bound for industrialising Asia’s steel mills, while its Western Australian iron ore shipments set a new record.

It said operating cash flow was at $12.2 billion, while shareholders would receive an improved interim dividend of 46 US cents.

“An improving economic backdrop and broader supply constraints continued to support the fundamentals for the majority of BHP Billiton’s core commodities,” BHP said in a statement.

The company also said it was “cautiously optimistic” about the global economy “given the continuation of robust growth in emerging markets and further positive signs of a sustainable recovery in major developed economies such as the US”.

But it added that sovereign debt problems in Europe and growing inflation in Asia posed significant risks.

BHP said revenue for the final six months of 2010 was up 39 per cent at $34.17 billion, adding that it planned to spend $80 billion on organic growth over the next five years.

The results also come despite a rocketing Australian dollar, which pared profits, and follow two major setbacks in BHP’s acquisition programme.

In October, BHP and Rio abandoned a merger of their Australian iron ore operations after anti-competition complaints from regulators and top customers including China. Just a month later, BHP ditched a $39 billion hostile bid for Potash, the world’s leading fertiliser-maker, after Canada’s government ruled it was unlikely to benefit the country.

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