CNBC | Oil ends down 7.7%, at $45.41 a barrel CNBC Oil prices tumbled as much as 8 percent on Tuesday, and Brent futures briefly fell back below $50 a barrel as weak Chinese manufacturing data revived concerns about global demand for petroleum. China's official Purchasing Managers' Index (PMI) dropped ... Crude oil is getting slammed Government Report Finds Economic Benefits of Oil Exports Crude oil prices dive 7% |