BP...accused Halliburton of destroying test results showing that the oil field services company used unstable cement to secure the Macondo well that blew out in the Gulf of Mexico last year. BP made the allegations in a 310-page legal filing at the U.S. District Court in New Orleans that is overseeing a class action lawsuit tied to the 2010 oil spill. BP accused Halliburton of "steadfastly" refusing to turn over its internal results from testing on the cement mix and subsequently destroying the data from those examinations. "Halliburton intentionally destroyed the evidence related to its non-privileged cement testing, in part because it wanted to eliminate any risk that this evidence would be used against it at trial," BP said in its filing. In response, Halliburton spokeswoman Beverly Stafford said...that the company is reviewing details of BP's filing, but that "we believe that the conclusion that BP is asking the court to draw is without merit and we look forward to contesting their motion in court."