Messrs. Carleton U. Edwards, II, Joseph Y. Houghton and Bernard Margolius, for petitioner.
Solicitor General Rankin, Assistant Attorney General Doub, Messrs. E. Riley Casey and Roland A. Anderson, for respondents.
Messrs. Elisha Hanson, Arthur B. Hanson and Calvin H. Cobb, Jr., for American Chemical Society, as amicus curiae.
Mr. Carlton S. Dargusch, for Engineers Joint Council, as amicus curiae.
On petition for writ of certiorari to the United States Court of Appeals for the District of Columbia Circuit.
PER CURIAM.
The petition for writ of certiorari is granted. The judgment of the Court of Appeals, and the orders of the Court of Appeals denying petitioner's motion for leave to amend the complaint and petition for rehearing, are vacated. The case is remanded to the Court ofAppeals with instruction (1) to allow petitioner's proposed amendments to the complaint and (2) to determine, in light of the amended complaint, the issues raised by petitioner's appeal.