Light sweet crude-oil futures rose sharply on Tuesday, touching a level not seen for six months, and extending a rally from the previous session. "The main catalysts behind Monday's advance was a surging U.S. equity market, as well as growing unease about the unrest in Nigeria," noted Edward Meir, analyst at MF Global Energy. In electronic trading on Tuesday, was contract was recently up 83 cents at $59.86 a barrel. It hit a six-month high of $60.48 early in the session.
