No. 79-7481. Argued and Submitted July 8, 1980. Decided July 11, 1980. Frederick Havard, Washington, D.C., for petitioner. Kathleen M. Kelly, argued and J. Richard Thesing, on brief, Little, Mendelson, Fastiff Tichy, San Francisco, Cal., for respondent. Application for Enforcement of an Order of The National Labor Relations Board. Before WRIGHT, KENNEDY and HUG, Circuit Judges. EUGENE A. WRIGHT, Circuit Judge: We are asked to enforce three orders of the Board finding Sacramento Clinical Laboratory