Edward Martin McKenna, Sr. appeals the district court’s order dismissing certain named and unnamed defendants. Appellee 3M Corporation has moved to dismiss the appeal. We dismiss the appeal for lack of jurisdiction because the order is not appealable. This court may exercise jurisdiction only over final orders, 28 U.S.C. § 1291 (1994), and certain interlocutory and collateral orders, 28 U.S.C. § 1292 (1994); Fed.R.Civ.P. 54(b); Cohen v. Beneficial Indus. Loan Corp., 337 U.S. 541, 69 S.Ct. 1221, 93 L.Ed. 1528 (1949). The order here appealed is neither a final order nor an appealable interlocutory or collateral order.

We grant Appellee 3M Corporation’s motion to dismiss and dismiss the appeal as interlocutory as to all Appellees. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court *211 and argument would not aid the decisional process.

DISMISSED.