BP, scientists try to make sense of well puzzle

In a nail-biting day across the Gulf Coast, engineers huddled over puzzling pressure readings from the bottom of the sea Friday to determine if BP's capped oil well was holding tight.
Halfway through a critical 48-hour window, the signs were promising but far from conclusive.
Kent Wells, a BP PLC vice president, said on an evening conference call that engineers had found no indication that the well has started leaking underground. LINK