In 1979, Seminole Electric Cooperative, Inc., a Florida corporation, borrowed over $1.1 billion from the Federal Financing Bank to construct a coal-fired power plant near Palatka, Florida. The loan was guaranteed by the Rural Electrification Administration. Construction of a 51-mile patrol road for the plant began in September 1979, but the original contractor faced difficulties obtaining suitable fill material in March 1981.
William Conover, Seminole's procurement manager, contacted his friend Anthony Tanner, who owned a limerock mine, about using limerock overburden as fill. Seminole awarded contracts for fill material and road construction to Tanner's company in May 1981, paying approximately $1,041,800 and $548,000 respectively. Conover and Tanner had prior business dealings, including payments and a loan from Tanner to Conover.
Federal authorities investigated the matter, leading to an indictment in June 1983 charging Conover and Tanner with conspiracy to defraud the United States and mail fraud. After a mistrial due to a hung jury, they were retried and convicted on most counts. The day before sentencing, Tanner filed a motion for a new trial based on information from juror Vera Asbul that several jurors consumed alcohol during lunch breaks and slept through afternoons. The District Court held a hearing but denied the motion to interview jurors, finding juror testimony inadmissible under Federal Rule of Evidence 606(b), and denied the new trial motion. While the appeal was pending, petitioners filed another motion supported by an affidavit from juror Daniel Hardy detailing extensive alcohol, marijuana, and cocaine use by jurors during the trial. The District Court denied this motion as well. The Court of Appeals for the Eleventh Circuit affirmed the convictions, and the Supreme Court granted certiorari.
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