Massachusetts Commission Against Discrimination and Peter D. McGrath, Complainant v. Local Union No. 12004, United Steel Workers of America, Stephen T. Bradley, Gary S. Buma, Paul P. Edmonds, Charles H. Grant, Raymond L. Lahair, Jr., Charles McNeil, Ronald F. Mezzano, Thomas Nugent, and Thomas St. Pierre, Respondents: findings of fact, conclusions of law, and order of the hearing officer