MarketWatch | Oil prices finish at lowest level in a month MarketWatch Oil prices fell Thursday, with U.S. prices ending at their lowest level in about a month, as growing concerns over rising U.S. production and the restart of Libya's largest oil field rattled the market. June West Texas Intermediate crude CLM7, -0.73 ... Oil prices are tanking, now below $49 a barrel at a 4-week low Oil prices fall more than 1 percent after Libyan oilfields restart Oil prices fall following Libyan oil fields restart |