Louisiana officials say 300,000 of those may have been in New Orleans.
Louisiana officials are trying to determine what, if anything, has gone awry with their teachers' pension plan.
Louisiana officials, he said, "saw it as a great opportunity to get the federal government to pay for a new facility."
Louisiana officials demanded more than $1 million in additional state royalties from the company, and eventually settled for $600,000.
Louisiana officials offered a first glimpse at the environmental wreckage.
But in recent weeks, Louisiana officials say, the administration has been less forceful on recovery measures.
The federal government had expected that Louisiana officials would identify sites inland where the mobile homes could be placed.
But that will not be enough money to help all property owners in storm-damaged areas, Louisiana officials say.
As a result, Louisiana officials set a July 31 deadline for applicants.
Louisiana officials say they monitored conditions at Tallulah and first reported many of the problems there.