Frank Sacco was convicted of collecting an extension of credit through extortionate means, using interstate commerce to further an extortionate scheme, and conspiracy to commit both offenses in violation of 18 U.S.C. §§ 894, 2 and 1952. In this appeal his two principal assertions of error are, first, that contrary to the decision in
Alderman
v.
United States,
*792 I.
During the cross-examination of a prosecution witness reference was made to the existence of wiretaps that had been placed on defendant’s phone by New York law enforcement officials in connection with an unrelated investigation. When this disclosure was discussed at a bench conference, the prosecution informed the district court that, while it had been aware of the state wiretaps prior to trial, it had in no way relied upon information obtained through them in preparing its case. The district court indicated that it would reserve ruling on the taint issue until after trial.
When the jury returned a verdict of guilty, it became necessary to resolve the taint issue. Toward that end, the district judge presided over ten days of hearings in November 1972, during which the government called numerous witnesses who uniformly testified that the New York wiretaps had not affected the federal investigation or prosecution. * Defendant, who was represented by counsel, was given the opportunity to cross-examine these witnesses, but he insisted that the hearings could not be fully effective unless he was permitted to review the tapes and wiretap transcripts themselves. The district court agreed and ordered that the tapes, transcripts and logs of recorded conversations to which Sacco was a party be produced. Although resistance by New York officials made production difficult, the tapes, transcripts and logs were eventually collected. Defendant was transferred to the federal prison in Lewis-burg to listen to them in January 1974.
In July 1974, defendant notified the district court that he had finished reviewing the wiretap information. The court then instructed defendant to file a list of the witnesses he intended to call at the next hearing and a proffer of their testimony. Despite considerable prodding by the court, the requested proffer was not filed until May 25,1975. No further proceedings took place, however, because defendant escaped from federal custody on June 16, 1975. As a result, the government moved to dismiss the taint motion, and the court granted dismissal at a hearing in July 1975. Defendant received notice of this hearing through his attorney, but chose not to attend.
After being returned to custody, defendant renewed his contention that the prosecution’s evidence had been tainted. The district court refused, however, to reconsider its prior order dismissing the taint motion. Moreover, at sentencing the district court indicated that, if the issue had been reached, it would have found beyond a reasonable doubt that the government had not used the fruits of the New York wiretaps, directly or indirectly, in the prosecution in the district of Maryland.
II.
In
Alderman
v.
United States,
In requesting the defendant to supply a proffer of witnesses and their testimony, the district court followed acceptable and established procedure. Courts often request such information because it provides them with a factual basis on which to exclude irrelevant evidence and evidence which is merely cumulative, as well as to *793 reduce the costs of litigation, without expending the time and effort which would be consumed by hearing the evidence at length. Alderman in no way implied that the adversary proceedings were to be conducted in a special manner different from other litigation, and we see no abuse of the district court’s discretion properly to manage the trial.
Defendant earnestly presses his claim that the taint issue should have been reopened after he was returned to custody, but he cites no authority to support his argument. The absence of authority is not surprising because it is difficult to think of a more striking example of waiver. Defendant escaped just when the adversary proceedings had progressed to the point where they could be completed. He bears the responsibility for their accelerated end. In
Molinaro v. New Jersey,
III.
Defendant also objects to the district court’s refusal to allow him to serve as cocounsel, claiming that this violated the spirit of
Faretta
v.
California,
Faretta
held that a criminal defendant has a constitutional right to represent himself
pro se
if he voluntarily and intelligently elects to do so. But
Faretta,
which emphasized the element of coercion in forcing unwanted counsel upon a defendant,
Defendant claims that a special need existed here because his greater familiarity with the facts would have enabled him to cross-examine more effectively than his attorney. We do not think that this amounts to the type of special need envisioned in Lang, however, for defendant could have sufficiently informed his counsel about the facts to allow him to perform adequately.
IV.
We see no merit in any of the other claims raised in the defendant’s brief and they are not of sufficient substance to warrant discussion.
AFFIRMED.
Notes
Throughout the taint proceedings, it was assumed that the New York wiretaps had been illegally obtained. The New York Court of Appeals, however, had approved their use in an appeal from defendant’s conviction on state charges.
