SAM LANE, JR., PLAINTIFF-APPELLANT,

v.

JACK A. HANBERRY, WARDEN, UNITED STATES PENITENTIARY, ATLANTA, GEORGIA, DEFENDANT-APPELLEE

PER CURIAM:

Lane, an inmate of the United States Penitentiary, Atlanta, Georgia, filed an action for mandamus and declaratory relief, asking that any and all records relating to an adverse disciplinary ruling of the El Reno Institution Discipline Committee, entered after a hearing on April 15, 1975, be expunged from his prison record. He appeals from the District Court’s dismissal of his petition for failure to exhaust administrative remedies. The evidence that Lane was advised of his right to an administrative appeal of the findings of the disciplinary committee within thirty days is uncontroverted. His twenty-one month delay in challenging their action clearly did not comport with the Bureau of Prisons’ procedural requirements. Lane thus waived his right to an administrative appeal from the action taken by the disciplinary committee in April, 1975.1 The District Court properly dismissed Lane’s petition since he failed to exhaust his administrative prison remedies. Thompson v. United States, Federal Prison Industries, 492 F. 2d 1082, 1084 n. 6 (5th Cir. 1974); Paden v. United States, 430 F. 2d 882 (5th Cir. 1970).

Lane contends that even though he was advised of his right to an administrative appeal, his due process rights were violated by the failure to inform him of the full effect of his waiver of that administrative right, that is, that it would also foreclose his right to challenge the disciplinary ruling in a court of law. His argument is groundless, for detailed explanations of such consequences are not required even with regard to notice of the right to appeal after criminal convictions, much less after prison disciplinary proceedings. Cf. United States v. Frontero, 452 F. 2d 406, 415 (5th Cir. 1971) (No validity in “the proposition that due process requires that a defendant be informed of each and every right which is waived by a guilty plea or that the waiver of these rights is a ‘consequence,’ within the meaning of Rule 11, of which a defendant must be personally informed before a guilty plea may be accepted.”)

AFFIRMED.

. Lane offers no viable excuse for his failure to exercise his right to an administrative appeal. He asserts, however, that his subsequent acquittal of criminal charges relating to the stabbing incident which was the subject of his April, 1975, disciplinary hearing mandates the expungement he now seeks. The contention lacks merit. Different standards of proof apply to criminal proceedings and prison disciplinary hearings. The subsequent jury finding, acquitting Lane in the criminal prosecution for the stabbing incident, has no per se effect on the prior prison disciplinary finding that he committed the act.