&)c toasJjmgtoK Saturday, May 3, 1980  
Nelson Bunker Hunt and his brother. W. Herbert, told congressional committees yesterday they are three-quarters of a billion dollars in debt as a result of their silver speculating spree, but they don't know yet whether they made or lost money on the deal.</br></br>The Hunts testified they may be able to minimize their losses with the help of a $1 billion bailout loan from a group of banks, arranged with the blessing of Federal Reserve Board Chairman Paul A. Volcker.</br></br>The loan will let the brothers keep their millions of ounces of silver, rather then force them to sell it now. Selling the silver immediately could drive down prices, causing heavy</br></br>Nelson Bunker Hunt testified he has silver speculation debts of about $350 million and W. Herbert said his obligations come to about $400 million.</br></br>Bunker and HerbertÛªs debts are so great that they are getting financial help from their brother Lamar, owner of the Kansas City Chiefs professional football team.