Mobil Alaska Pipeline Co. v. United States et al.; Exxon Pipeline Co. v. United States et al.; BP Pipelines, Inc. v. United States et al; and ARCO Pipe Line Co. v. United States et al.

C. A. 5th Cir. [Certiorari granted, 434 U. S. 964.] Motion of the Solicitor General for additional time for oral argument granted and 15 additional minutes allotted respondents for that purpose. Petitioners also allotted 15 additional minutes for oral argument. Mr. Justice Stewart and Mr. Justice Powell took no part in the consideration or decision of this motion.