EXXON <XON> CUTS HEATING OIL BARGE PRICE Oil traders in New York said Exxon Corp's Exxon U.S.A. unit reduced the price it charges contract barge customers for heating oil in New York harbor 0.75 cent a gallon, effective today. They said the reduction brings Exxon's contract barge price to 43.25 cts. The price decrease follows sharp declines in heating oil prices on spot and futures markets, traders said.