On December 18, 1969, he asked the United States Department of Labor (DOL) to investigate the election for fraud. He also initiated five civil lawsuits against UMWA in federal court, on related matters. He alleged that: Boyle and UMWA had denied him use of the union's mailing lists as provided for by law, he had been removed from his position as acting director of Labor's Non-Partisan League in retaliation for his candidacy, the "UMW Journal" was being used by Boyle as a campaign and propaganda mouthpiece, UMWA had no rules for fair elections, and had printed nearly 51,000 excess ballots which should have been destroyed; and UMWA had violated its fiduciary duties by spending union funds on Boyle's reelection. These charges and their resolution are outlined in the civil case "Kenneth J. Yablonski and Joseph A. Yablonski v. United Mine Workers of America et al.," 466 F.2d 424 (August 3, 1972), which his sons carried to the end.