Exxon officials testified before Congress on Friday that they had already spent $600 million.
In a statement, Exxon officials did not comment specifically on the fraud allegation.
All of this shows, Exxon officials said, that recovery has come sooner than expected.
Exxon officials say they do not understand the fuss.
Exxon officials have said they will pay the costs of cleanup and damages.
Exxon officials have disputed allegations that the company was not doing a good job managing the cleanup.
Exxon officials were still trying yesterday afternoon to determine the extent of the damage.
But by Tuesday, Exxon officials said it was too late to use the chemicals.
Exxon officials said it is against company policy to allow any drugs or alcohol on board oil tankers.
Exxon officials say they have had no trouble getting all the workers they can handle.