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The Brazilian authorities are trying to determine the source of an oil spill that has polluted more than 160 beaches since the beginning of September. More

Mexico's finance minister Arturo Herrera announced that Pemex had boosted production levels by more than 100,000bpd this year thanks to capital injections and government efforts to prop up the state oil company, but he also restated the fundamental nature of long-term private sector involvement in deepwater projects, and hailed the first signs of commercial success in that arena. More