Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. 'Frustrated' Obama Meets on Gulf Oil Spill VOA News 14 May 2010 U.S. President Barack Obama is meeting with his advisers Friday at the White House to discuss what more can be done to stop the massive underwater oil leak in the Gulf of Mexico. Administration officials describe the president as "deeply frustrated" that the company in charge of stopping the leak, BP, has failed to do so in the three weeks since an oil rig explosion caused the well to start gushing oil. Mr. Obama will make a statement after the discussions. Meanwhile, a researcher at Purdue University estimates that the amount of oil leaking into the Gulf of Mexico is many times greater than the 5,000 barrels a day estimated by BP. Associate professor Steve Wereley says calculations he made based on watching video of the leak suggest as much as 70,000 barrels of oil are leaking daily. BP stands by its estimate. BP says its calculation was made in consultation with the U.S. National Oceanic and Atmospheric Administration. BP and other researchers say there is no way to make accurate calculations based strictly on the available video of the leak. BP officials meanwhile say they are preparing to launch another attempt to plug the ruptured well, by inserting a tube into the ruptured pipe on the ocean floor. That would allow the oil to be pumped to a tanker on the water's surface. BP says another option for sealing the well, a small containment chamber known as a "top hat" dome because of its shape, remains a possibility if the insertion tube does not work. Engineers have offered no timeframe for the insertion tube procedure. BP reported Thursday that the cost of containing and cleaning up the massive oil spill has reached $450 million. Emergency response officials say more than 526 vessels are working to contain the massive spill, and 14 staging areas have been established to protect shorelines in the southern states of Louisiana, Mississippi, Alabama and Florida. The spill began after an oil rig exploded April 20 off the coast of Louisiana and sank two days later. Eleven workers were killed as a result of the initial explosion.  Some information for this report was provided by AP, AFP and Reuters. .