"Upbeat US economic news led to the rise of oil prices Wednesday, while scorching temperatures lifted natural gas to its highest level in more than five months."
"Patriot Coal Corp has filed for bankruptcy protection as it was facing increasing pressures in recent months with demand for coal plunging to a 24-year low due to a shift to natural gas and milder winters, falling thermal coal prices, canceled customer contracts and rising costs for environmental liabilities.
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