By Patrick McGee Of DOW JONES NEWSWIRES NEW YORK -(Dow Jones)- CSX Corp. (CSX), a transportation supplier, plans to issue $300 million of 30-year bonds in U.S. credit markets on Thursday, according to a person familiar with the matter. The bonds are expected to be rated Baa3 by Moody's Investors Service and BBB by Standard & Poor's Ratings Services. The Jacksonville, Fla., company intends to the use proceeds in a planned $275 million contribution to its qualified pension plans, as well for general corporate purposes. The Securities and Exchange Commission-registered bonds include a change of control provision allowing investors to redeem the bonds at 101 cents on the dollar should the company be acquired. J.P Morgan and UBS are lead bookrunners on the deal. -By Patrick McGee, Dow Jones Newswires; 212-416-2382; patrick.mcgee@dowjones.com