ON PETITION FOR WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE SIXTH CIRCUIT. No. 598. Decided June 23, 1969. Together with No. 906, Thrift Drug Co. of Pennsylvania v. National Labor Relations Board, and No. 1213, Lou De Young's Market Basket, Inc. v. National Labor Relations Board, also on petitions for writs of certiorari to the United States Court of Appeals for the Sixth Circuit; and No. 1273, National Labor Relations Board v. Pembek Oil Corp., on petition for writ of certiorari