Lt. Aaron Jozsef said Friday that crews had removed more than 250,000 gallons of a mixture of oil and water from the barge. The barge began leaking after crashing into a railroad bridge Sunday near Vicksburg.
The damaged barge is pushed against the bank on the Louisiana side of the river, directly across from Vicksburg's Riverwalk and Lady Luck casinos.
The oil is being pumped off the damaged barge and onto another barge, a process known as lightering. It's not clear how long the process will take.