A treasure hunter has accused the FBI of a 'major coverup' after it allegedly made off with $500million worth of buried Civil War gold. Dennis Parada believes he located a burial site around halfway up a mountain in western Pennsylvania laden with Civil War treasure, before the FBI dug up the goods under the cover of darkness. The detectorist claims he alerted authorities to the possible haul after ground-testing suggested the Dents Run site was filled with gold. The FBI then commissioned its own tests that suggested vast amounts of the metal could be below the surface. The agency claims...