The U.S. Coast Guard is conducting tests to determine if it is possible to clean up more than 120,000 gallons of clarified slurry oil that spilled into the Mississippi River after a tow boat collision Wednesday night.
Coast Guard spokesperson Lora Ratliff said it may be impossible to recover the oil because it sinks. The Coast Guard reported Saturday there were no visible signs of oil along the river bank.
Ratliff said air monitors have shown the spill has not impacted air quality.
The Coast Guard and National Transportation Safety Board are still investigating the cause of the collision.