SWYGERT, Chief Judge.

Appellants are inmates of the federal penitentiary at Marion, Illinois. Approximately ten months ago they instituted a class action against Norman Carlson, Director of the Federal Bureau of Prisons, and various officers of the Marion penitentiary. Their complaint alleged that each member of the class was in segregated confinement at Marion, that placement in that status by prison authorities was not attended by procedural safeguards guaranteed by the due process clause of the Fifth Amendment, and that the segregated confinement at issue was in violation of the prohibition by the Eighth Amendment of cruel and unusual punishment. Also claimed was the imposition by Marion officials of undue restrictions on the prisoners' rights of access to courts and counsel. With these allegations before him, and after a hearing on the matter, the district judge denied plaintiffs' motion for a preliminary injunction. Adams v. Carlson, 352 F. Supp. 882 (E.D. Ill. 1973). This appeal followed.

I

Appellants were segregated after a general work stoppage on July 17, 1972. The disruption was in violation of prison rules requiring labor of all able-bodied inmates. To thwart the stoppage, Marion officials first confined the entire prison population to their cells. Most inmates were released six days later, on July 24, after seven inmates suspected to be prominent instigators of the mutiny were relegated to segregation, along with ten supporters insistent upon accompanying them. Work apparently resumed as normal for only a short time thereafter. On the afternoon of July 25, a disturbance again put a halt to regular prison activity. Taking no chances with simply isolating the ringleaders, the Marion administration undertook widespread segregation of inmates suspected of insubordination; approximately eighty-six more prisoners were removed from the general population.

Marion authorities then convened an Adjustment Committee for the purpose of finalizing placements in segregation, Assistant Warden Fenton being designated chairman. Each suspect appeared before the Committee in person and was orally confronted with the charges against him. He was allowed to comment on these accusations and was informed of the identity of the officer who had gathered the information upon which Committee suspicion was based. The source of the information was not revealed, nor was the inmate allowed to peruse the report of the investigating officer. The Adjustment Committee then rendered its judgment on evidence comprised solely of the officer's report and the inmate's justifications. Where guilt was found, the Committee imposed punishment by indefinite placement in segregation.

It is less clear whether appellants received notice of the charges against them in advance of their respective appearances before the Adjustment Committee. On the whole, the evidence strongly supports a finding that many of them did not. The administrative guidelines in force at Marion during the period in question did not mandate advance notice, and several inmates testified to a dearth of prior notice. Assistant Warden Fenton himself admitted that no advance written notice was given the inmates. Also manifest on the record is the fact that Marion inmates had no written book of rules or regulations prior to the July work stoppage.

Trouble at Marion was not abated by the segregation of rebellious inmates. Sometime in the early hours of August 18, 1972, inmates in one of the two Marion segregation units ignited their mattresses and threw them into the range hallway. They also succeeded in flooding cells and hallways by blocking sinks and toilets while running the water. After or during the time that order was restored, guards stripped the cells of each inmate in segregation of whatever property was thought to constitute a combustible fire hazard. This included, of course, books and papers without limitation, as well as clothes and mattresses. Some of the clothing was returned to the inmates immediately after its thorough search for contraband. Mattresses or their replacements were back in the possession of inmates no later than August 26 or 27. Yet many of the inmates had not been able, upon request, to secure the return of their legal materials by the time evidence was taken on their motion for preliminary relief; the trial judge found that "[s]ome of the material apparently has been returned, and some has not." 352 F. Supp. at 890. The same description pertained at the time we heard the argument of this case.

Segregation cells were again searched on October 16, 1972, after inmates had refused to return their plastic food trays and utensils to attending guards. In one cell guards discovered a loaded gun. There was nothing particularly unusual about the weapon itself; being crudely made of household items, authorities concluded that the inmate in possession had assembled it in his cell. The explosive powder which charged the apparatus caused more consternation, however. Assistant Warden Fenton testified to his belief that this material was of a commercial variety and that it had been brought in from beyond the prison walls. On this basis, substantial modification was made to the attorney visiting room at Marion.

The room originally had been fitted with a table and chairs. Prior to a meeting with his attorney, an inmate had been thoroughly strip-searched. The meeting occurred under close visual surveillance by a prison guard, and the prisoner was again searched upon leaving the room. In fear after the gunpowder incident that the post-meeting search of an inmate was inadequate to reveal his possession of small and durable objects or contraband surreptitiously passed to the inmate by his attorney during a moment of inattention by the guard, prison authorities divided the room with a soundproof glass barrier. Phones were provided for communication between inmate and lawyer. In order to pass written information, an attorney must now present the material to a guard, who takes it out of the room and around through the entry door on the prisoner's side of the room.

Suit was brought by inmates in segregation on September 11, 1972, some time before the revamped attorney visitation system was put into operation. Alleging irreparable injury, the inmates sought, by motion for a preliminary injunction, immediate relief from their indefinite segregation without due process, their restricted access to attorneys, and the retention of their legal materials earlier confiscated by prison authorities. The district judge denied their motion in its entirety. With respect to the due process claim, the judge found that appellants had not "made a strong showing of complete lack of due process in the past, of probability of success on the merits, or of irreparable harm," 352 F. Supp. at 893, since Marion officials had instituted hearing procedures in full accord with our decision in Adams v. Pate, 445 F.2d 105 (7th Cir. 1971), only a few days prior to the hearing on appellants' motion for a preliminary injunction. Nor did the judge agree that cruel and unusual punishment had been shown. He likewise denied the request of appellants for a mandatory return of their legal materials, finding that the implementation of a newly adopted prison directive requiring inmate access to legal materials disposed of the claim. Lastly, he refused to order the slightest modification to the bisected attorney visiting room. The new system, he felt, was "not ideal, but . . . [did] permit minimal access of inmates to their attorneys." 352 F. Supp. at 890.

This appeal was subsequently taken pursuant to 28 U.S.C. § 1292(a)(1).

II

When the trial judge issued his memorandum opinion denying appellants a preliminary injunction, his sole guide to the stance of this Circuit on due process in the prison disciplinary context was Adams v. Pate, 445 F.2d 105, 108 (7th Cir. 1971). Were he to redecide the issue today, he would have available our recent and directly relevant decision in United States ex rel. Miller v. Twomey, 479 F.2d 701 (7th Cir. 1973), where we spoke to the requirements of the due process clause when prisoners are placed in punitive segregation. Our ultimate holding was that candidates for segregation sufficiently severe to impose a "grievous loss" of liberty were entitled to "an adequate and timely written notice of the charges, a fair opportunity to explain and to request that witnesses be called or interviewed, and an impartial decision maker." Miller, at 718. These were the bare minima. Each case in Miller involving segregation was remanded to its respective district court for an additional finding, namely, the extent to which other of the due process maxima embodied in Morrissey v. Brewer, 408 U.S. 471, 92 S.Ct. 2593, 33 L.Ed. 2d 484 (1972), were essential to the discipline of prisoners in conformity with the due process clause.

Whether Miller would have made a difference to the district judge in this case is open to question, since he did not conclude that the hearings held at Marion in July and August of 1972 were in compliance with Pate. He found, instead, that procedures which satisfied Pate had been instituted after those hearings. Unless, however, the newly instituted procedures provide some means for correcting what were arguably old errors, we fail to perceive how the new methods moot a claim based on the old. The Government has produced not a whit of evidence to prove its provision of an effective rehearing to prisoners segregated after the July chaos, and the question before us must be whether the original hearings passed the test of due process.

We return, then, to Miller. The Government asserts that the disciplinary hearings at issue were held in full compliance with the minimal standards set out by our decision in Pate and by other cases of the time. See, e.g., Sostre v. McGinnis, 442 F.2d 178 (2d Cir. 1971). To apply Miller now, they argue, would violate an established and venerable proscription of retroactive decisionmaking. It is also argued that the original hearings fully complied with Miller. We reject both propositions.

In another era, the common law was adamant in its insistence that judges were without authority to limit a decision to prospective effect: The duty of the court, Blackstone wrote, was not to "pronounce a new law, but to maintain and expound the old one." 1 Blackstone, Commentaries 69 (15th ed. 1809). Decisions of recent vintage have made significant inroads on this view, as is amply apparent from the doctrinal revolution which began with Linkletter v. Walker, 381 U.S. 618, 85 S.Ct. 1731, 14 L.Ed.2d 601 (1965). There the United States Supreme Court advanced the proposition — then novel — that "the Constitution neither prohibits nor requires retrospective effect" for decisions expounding new constitutional rules affecting criminal trials. 381 U.S. at 629, 85 S.Ct. at 1737. No longer presumed, retroactivity was found to be a matter determined by a balance of exigencies against the extent to which a new rule went to the fairness of trial. The more marked was the focus of a new decision on the "very integrity of the fact-finding process," 381 U.S. at 639, 85 S.Ct. at 1743, the greater was the burden on the Government to display its reliance upon old rules and to make a case that retroactive application of the new decision would result in a probable and extensive disruption of the administration of criminal justice.

Weighing these criteria to fix the temporal expanse of Mapp v. Ohio, 367 U.S. 643, 81 S.Ct. 1684, 6 L.Ed.2d 1081 (1961), the Court struck the balance in favor of prospectivity. Local law enforcement officials were found justifiably to have relied on Wolf v. Colorado, 338 U.S. 25, 69 S.Ct. 1359, 93 L.Ed. 1782 (1949), which Mapp overturned. The Court took cognizance, too, of numerous practical difficulties which would likely have attended an extension of Mapp to times past, including the requirement of hearings on the admissibility of evidence long since destroyed or misplaced, and, where error was found, the provision of a retrial complicated by the absence of original witnesses or the dimming of their memories. The Court found no counterbalance to these problems, Mapp, it held, was aimed in large part at deterring lawless police conduct; whether lawless or not, evidence obtained by that conduct was of indubitable reliability and relevance.

Linkletter was the first in a long line of cases giving prospective effect to rules newly propounded in the field of constitutional criminal procedure. It was direct authority for cases like Williams v. United States, 401 U.S. 646, 91 S.Ct. 1148, 28 L.Ed.2d 388 (1971), and Desist v. United States, 394 U.S. 244, 89 S.Ct. 1030, 22 L.Ed.2d 248 (1969), where the Court limited to prospective effect the Fourth Amendment interpretations of Chimel v. California, 395 U.S. 752, 89 S.Ct. 2034, 23 L.Ed.2d 685 (1969), and Katz v. United States, 389 U.S. 347, 88 S.Ct. 507, 19 L.Ed.2d 576 (1968). See also Fuller v. Alaska, 393 U.S. 80, 89 S.Ct. 61, 21 L.Ed.2d 212 (1968). New decisions relating to criminal procedure grounded in the Fifth and Sixth Amendment were limited in retroaction by an analysis akin to that made in Linkletter. Adams v. Illinois, 405 U.S. 278, 92 S.Ct. 916, 31 L.Ed.2d 202 (1972); Mackey v. United States, 401 U.S. 667, 91 S.Ct. 1160, 28 L.Ed.2d 404 (1971); DeStefano v. Woods, 392 U.S. 631, 88 S.Ct. 2093, 20 L.Ed.2d 1308 (1968); Stovall v. Denno, 388 U.S. 293, 87 S.Ct. 1967, 18 L.Ed.2d 1199 (1967); Johnson v. New Jersey, 384 U.S. 719, 86 S.Ct. 1772, 16 L.Ed.2d 882 (1966); Tehan v. Shott, 382 U.S. 406, 86 S.Ct. 459, 15 L.Ed.2d 453 (1966). Johnson, which denied retroactive effect to Miranda v. Arizona, 384 U.S. 436, 86 S.Ct. 1602, 16 L.Ed.2d 694 (1966), and Escobedo v. Illinois, 378 U.S. 478, 84 S.Ct. 1758, 12 L.Ed.2d 977 (1964), is noteworthy for a variation it took on the Linkletter analysis. To counter the unavoidable fact that Miranda and Escobedo provided "important new safeguards against the use of unreliable statements at trial," the Court placed emphasis on the fact that prisoners without the benefit of those decisions had available the protection of a substantive test of voluntariness founded on the due process clause, a test which took "specific account of the failure to advise the accused of his privilege against self-incrimination or to allow him access to outside assistance," failures which formed the respective foci of Miranda and Escobedo, 384 U.S. at 730, 86 S.Ct. at 1779. The same technique was employed in Stovall, where the Court made reference to due process restrictions on pretrial confrontation in refusing to give retroactive effect to United States v. Wade, 388 U.S. 218, 87, S.Ct. 1926, 18 L.Ed.2d 1149 (1967), and Gilbert v. California, 388 U.S. 263, 87 S.Ct. 1951, 18 L.Ed.2d 1178 (1967), cases which fashioned exclusionary rules to deter police from pretrial exhibition of a suspect to witnesses for identification purposes without notice to or the presence of counsel.

Few, we think, would doubt the proposition that Miller is a case which "readily lends itself to the analysis established in Linkletter." Robinson v. Neil, 409 U.S. 505, 507, 93 S.Ct. 876, 877, 35 L.Ed.2d 29 (1973). Robinson found fully retroactive a rule propounded under the double jeopardy clause in Waller v. Floria, 397 U.S. 387, 90 S.Ct. 1184, 25 L.Ed.2d 435 (1970). The Court distinguished Linkletter and its progeny, noting that the practical result of the double jeopardy clause "is to prevent a trial from taking place at all, rather than to prescribe procedural rules that govern the conduct of a trial." 409 U.S. at 509, 93 S.Ct. at 878. To the extent that a prison disciplinary hearing may be analogized to a criminal trial, Linkletter must be our analytical touchstone, for Miller was concerned almost exclusively with the procedural integrity of prison hearings.

Drawing the necessary analogy is an easy task. Miller involved disciplinary hearings aimed at imposing a grievous loss of liberty on an inmate, a deprivation which we viewed as equivalent to that suffered by a parolee upon his return to prison. In dealing with the topic of parole and its revocation in Morrissey v. Brewer, 408 U.S. 471, 92 S.Ct. 2593, 33 L.Ed.2d 484 (1972), the Supreme Court — conceding that "the full panoply of rights due a defendant in . . . a [criminal] proceeding does not apply to parole revocations," 408 U.S. at 480, 92 S.Ct. at 2600 — held that the liberty of parole was nonetheless valuable and under the aegis of the Fourteenth Amendment. What a prisoner suffers upon segregation, then, differs from what he suffered upon conviction by shades of degree, not of kind. That the prisoner is convicted by an administrative prison board instead of a court makes no significant difference. Nor does it matter that Miller and this case arise in a civil rather than a criminal context. See Linkletter, 381 U.S. at 627, 85 S.Ct. 1731.

Of the three factors determinative of prospectivity in Linkletter, the one which weighs in favor of retroactivity is most strongly represented here; our holding in Miller was founded on the interest of "[b]oth the state and the inmate . . . in the accuracy of the factual determination that the prisoner is in fact guilty of a serious rule infraction." Miller, 479 F.2d at 715. The "very integrity of the fact-finding process" was vitally at stake. And there exist no other constitutional protections of the process with which Miller dealt; Miller, in essence, is like Haynes v. Washington, 373 U.S. 503, 83 S.Ct. 1336, 10 L.Ed.2d 513 (1963), or Spano v. New York, 360 U.S. 315, 79 S.Ct. 1202, 3 L.Ed.2d 1265 (1959), the due process cases which the Johnson Court cited to soften the nonretroactivity of Escobedo and Miranda. We need go no farther to hold Miller entirely retroactive:

Where the major purpose of new constitutional doctrine is to overcome an aspect of the criminal trial that substantially impairs its truth-finding function and so raises serious questions about the accuracy of guilty verdicts in past trials, the new rule has been given complete retroactive effect. Neither good-faith reliance by state or federal authorities on prior constitutional law or accepted practice, nor severe impact on the administration of justice has sufficed to require prospective application in these circumstances. Williams v. United States, 401 U.S. 646, 653, 91 S.Ct. 1148, 1152, 28 L.Ed.2d 388 (1971).

We will, nevertheless, continue on to examine the factors of reliance by and impact upon agencies of law enforcement. On the whole, they bolster, not weaken, our conclusion.

The reliance which prison officials may have placed on Pate and its predecessors cannot be gainsaid, but neither can the fact that their provision of a new hearing to segregated inmates is far less likely to disrupt the administration of justice than were the retrials which would have resulted had Linkletter come out the other way or had Adams, where not only a new trial but a new indictment and preliminary hearing would have been required. A rehearing under Miller is a much less complex and time-consuming matter than a criminal retrial. Moreover, a Miller rehearing raises a relatively minor problem of lost or forgetful witnesses since it is fair to say that segregation is typically a shorter affair by far than the term of a criminal sentence. If a man commits a crime against state or federal law while in prison, he is tried in a court of law and sentenced to additional time in prison. Segregation is not usually imposed for criminal misconduct; it is reserved, instead, to correct serious infractions of prison rules. For a single such event, segregation does not and should not exceed a few months, if that long.

We conclude that Miller sets the standard which governs this appeal and reverse the district court, there being little doubt that the safeguards of Miller were not provided appellants. There can be equally little doubt that appellants have shown, in addition, that the absence of preliminary relief will cause them irreparable harm. Imprisonment in segregation is the condition perhaps most paradigmatic of that term.

As in Miller, we remand this case to the district court to determine the extent to which the standards therein enunciated require enlargement or clarification. This need not be done, of course, where the penitentiary regulations now in force obviate the need for enlargement or clarification on constitutional grounds. Following this determination, the district court shall order new hearings by Marion authorities to be attended, at the very least, by the minimum safeguards of Miller and the protections afforded by current regulations. Since the appellants have already suffered a lengthy stay in segregation, the district judge shall proceed forthwith and require the same of Marion officials. In no event shall his mandate issue later than fifteen days after the release of this opinion, and appellees shall have, at the most, thirty days to rehear appellants' cases.

III

We turn now to the problem created by alterations to the attorney visitation room at the penitentiary. The Government would have us uphold the remodeling on the rationale advanced by the district judge, who found that the measure, albeit "stringent," was a needed security precaution adequate to provide inmates with "minimal access" to their attorneys. 352 F. Supp. at 890. The appellants take direct issue with the standard of "minimal access" and call to our attention numerous restrictive aspects of the bisected room. Documents and written communications cannot be passed directly from lawyer to inmate; a guard, materials in hand, must circumvent the outer perimeter of the room, often taking as long as five minutes. If the attorney chooses not to take this option, but nevertheless desires to discuss with his client the contents of one or more documents not then in the possession of the inmate, he must hold the document to the glass partition and refer to it from memory or from an extra copy as he speaks to his client over the phone. Contemporaneous discussion of two or more documents, or of a ponderous transcript, thus becomes a formidable undertaking. Equally formidable, it is argued, is an attempt by two or more attorneys to speak to one or more inmates, a particular problem in class action litigation of the sort now on appeal. Lastly, attorneys for appellants note the difficulty of establishing from behind glass a satisfactory working relationship with inmates who survive daily in an atmosphere charged with distrust. According to appellants, the Constitution requires a reinstitution of the original arrangement. Given the paucity of evidence in the record to support the Government's view that Marion officials reasonably feared importation of contraband by appellants' attorneys, we reverse the ruling of the district judge.

Citation of authority is hardly needed for the proposition that an inmate's right of unfettered access to the courts is as fundamental a right as any other he may hold. Ex parte Hull, 312 U.S. 546, 61 S.Ct. 640, 85 L.Ed.2d 1034 (1941); Coleman v. Peyton, 362, F.2d 905 (4th Cir. 1966); Lee v. Tahash, 352 F.2d 970 (8th Cir. 1965); Spires v. Bottorff, 317 F.2d 273 (7th Cir. 1963). All other rights of an inmate are illusory without it, being entirely dependent for their existence on the whim or caprice of the prison warden. Stiltner v. Rhay, 322 F.2d 314 (9th Cir. 1963). The judiciary, moreover, has not been content merely to keep free the lines of communication between the inmate, the courts, and agencies of correction. Whether as a vital concomitant of the prisoner's right to petition the bench or as a distinct requirement of his right to effective counsel guaranteed by the Sixth Amendment, a right of access by an inmate to counsel has been perceived by a number of courts. Compare Nolan v. Scafati, 430 F.2d 548 (1st Cir. 1970), with Moore v. Ciccone, 459 F.2d 574, 577 (8th Cir. 1972). Johnson v. Avery, 393 U.S. 483, 89 S.Ct. 747, 21 L.Ed.2d 718 (1969), for example, required that prison authorities allow inmates ready access to jailhouse lawyers. In the same vein, prison officials have been prohibited from interfering with postal communications between an inmate and his counsel which relate to the legality of either his criminal conviction or the conditions of his incarceration. Goodwin v. Oswald, 462 F.2d 1237 (2d Cir. 1972); Moore v. Ciccone, 459 F.2d 574 (8th Cir. 1972); Sostre v. McGinnis, 442 F.2d 178 (2d Cir. 1971); McDonough v. Director of Patuxent, 429 F.2d 1189 (4th Cir. 1970); Carothers v. Follette, 314 F. Supp. 1014, 1023 (S.D.N.Y. 1970); Fulwood v. Clemmer, 206 F. Supp. 370, 376 (D.D.C. 1962), even where the lawyer is not the inmate's counsel of record. Burns v. Swenson, 430 F.2d 771 (8th Cir. 1970); Nolan v. Scafati, 430 F.2d 548 (1st Cir. 1970); Coleman v. Peyton, 340 F.2d 603 (4th Cir. 1968); Compare McCloskey v. State of Maryland, 337 F.2d 72 (4th Cir. 1964). The final phase of this development has been a recognition that the effective protection of access to counsel requires that the traditional privacy of the lawyer-client relationship be implemented in the prison context. Thus there has been widespread agreement that communications by post between an inmate and his attorney are sacrosanct, subject only to tests on incoming mail for the presence of contraband which fall short of opening it when the inmate is not present. Smith v. Robbins, 454 F.2d 696 (1st Cir. 1972); Merritt v. Johnson, No. 38401 (E.D.Mich., Nov. 30, 1972); Marsh v. Moore, 325 F. Supp. 392 (D. Mass. 1971) (outgoing mail also held subject to inspection); Palmigiano v. Travisono, 317 F. Supp. 776 (D.R.I. 1970); see Goodwin v. Oswald, 462 F.2d 1237, 1245 (2d Cir. 1972) (Oakes, J., concurring); Moore v. Ciccone, 459 F.2d 574, 578 (8th Cir. 1972) (Lay, Heaney, Bright and Ross, JJ., concurring); Morales v. Turman, 326 F. Supp. 677 (E.D. Texas, 1971); contra, Sostre v. McGinnis, 442 F.2d 178 (2d Cir. 1971). Oral intercourse has been hedged with similar protection. Rhem v. McGrath, 326 F. Supp. 681, 691 (S.D.N Y 1971); See Morales v. Turman, 326 F. Supp. 677 (E.D.Texas 1971).

This case presents a somewhat different aspect of the overall problem. We have no censor editing the factual or conceptual content of what passes between an inmate and his counsel over the phones and through the glass of the barrier in the visiting room. The privacy of each encounter is scrupulously maintained. What is involved, instead, is a restriction on the ease with which attorney-client meetings could be carried on, and a lessening of personal interplay between inmates and counsel. By so phrasing the issue, we do not intend to denigrate its importance; nevertheless, we do not view the partition to create an impediment to communication of the magnitude seen where direct censorship is undertaken by prison officials.

Given this view, we decline appellants' invitation to find that a "fundamental" interest is threatened by the partition arrangement, the infringement of which the Government must justify by showing some compelling need. We need not do so to invalidate the separation. However lightly one may view the complaints of appellants about the isolation and inconvenience of the existing facility, the justifications offered by the Government in its support weigh lighter still and fall markedly short of stating a rational basis for its erection. To justify his impairment of communication between attorneys and inmates in the name of security, a prison warden must come forward with facts which tend to support a reasonable suspicion not only that contraband is being smuggled to inmates in the face of established preventive measures, but that their attorneys are engaged in the smuggling. We ground the last requirement on our unwillingness to assume that attorneys — admittedly the partisan advocates in court of their clients' cause — are more willing or more inclined to smuggle contraband past prison officials than are other outsiders who deal directly with inmates, as well as on our recognition of the constitutional importance of the business which an attorney typically conducts with an inmate, a status not attending the affairs which prison personnel carry on with an inmate nor usually shared in equal measure by the business transacted between an inmate and a reporter or clergyman. The former requirement rests on the obvious proposition that prison authorities may not restrict the exercise of constitutional rights by those in their charge without showing a threat to the order or security of their institution. The only testimony taken below related to that point; Warden Fenton offered his belief that gunpowder found in an inmate's cell could not have come from inside penitentiary walls. Absent Fenton's qualification as an expert, or at least as a witness knowledgeable in the art of explosives, this statement will not support a conclusion of smuggling, particularly in light of the fact that Fenton was directly contradicted by the possessor of the powder as to its origin. And this flaw comprises only a part of the error committed below, for the record is barren of evidence to support a finding that appellants' attorneys were responsible for misconduct.

We might add that the advancement by the Government of a suitable justification for its alterations would nevertheless leave officials of Marion subject to censure for their treatment of counsel. A means of regulating intercourse between inmate and attorney less restrictive than the bisected room but equally secure was made available to them, for the lawyers of appellants evidenced a willingness to submit to a search before meeting with their clients. It is true, no doubt, that a warden places the safety of his institution at stake whenever he chooses to allow tactile intercourse between inmates and outsiders. But a careful search of an outsider prior to his contact with inmates reduces the warden's risk to the vanishing point. Where an attorney visiting an incarcerated client offers to waive his right to resist a search by prison guards, a penal institution errs at the expense of the inmate's right of full access to the courts when it declines the offer of his counsel and requires a conference by phone across glass.

In accord with the request of appellants, the district court shall enjoin Marion officials from requiring attorneys for appellants to confer with their clients in the partitioned visiting room. The phones and partition must be removed or a new and undivided room provided.

IV

Along with the recognition of a prisoner's right of access to the courts has come the realization that a prisoner must have access to legal materials, particularly where he is unable to retain counsel and must petition the courts pro se.

"Access to the courts," . . . is a larger concept than that put forward by the State. It encompasses all the means a defendant or petitioner might require to get a fair hearing from the judiciary on all charges brought against him or grievances alleged by him. . . . Johnson v. Avery, . . . makes it clear that some provision must be made to ensure that prisoners have the assistance necessary to file petitions and complaints which will in fact be fully considered by the courts. Gilmore v. Lynch, 319 F. Supp. 105, 110 (N.D. Cal. 1970), aff'd sub nom. Younger v. Gilmore, 404 U.S. 15, 92 S.Ct. 250, 30 L.Ed.2d 142 (1971).

True to this philosophy, the Supreme Court, reciting Johnson v. Avery, 393 U.S. 483, 89 S.Ct. 747, 21 L.Ed.2d 718 (1969), affirmed in Gilmore the disapproval by a three-judge district court of a state penitentiary regulation which severely limited the breadth of legal data available to state prisoners. Accord Hooks v. Wainwright, 352 F. Supp. 163 (M.D.Fla. 1972) ( de facto restriction). The question presented by appellants with respect to the confiscation of their legal materials is not strictly analogous to that presented by the California inmates in Gilmore. More relevant to the present issue is a decision of this circuit, Sigafus v. Brown, 416 F.2d 105 (7th Cir. 1969), where we held that a complaint alleging the destruction by prison guards of an inmate's legal papers essential to his ongoing appeal stated a good cause of action for damages under the Civil Rights Act. "[T] he deprivation of materials necessary to afford reasonable access to the courts" was, we ruled, a violation of due process. 416 F.2d at 107. Accord, DeWitt v. Pail, 366 F.2d 682 (9th Cir. 1966).

Though the trial judge attempted to distinguish Sigafus, we are at a loss to discern his rationale. The same may be said of the Government's position on this appeal. If a prisoner may sue for damages when his legal materials are irrevocably confiscated, then surely he may seek an injunction mandating the return of materials held intact by prison officials after confiscation. The judge, moreover, did not find that undestroyed materials were irrelevant to the prosecution of appellants' existing or potential legal actions. The gravamen of his decision appears to be that officials of Marion were justified in removing legal materials from the cells of appellants, who might well have been expected to employ them as fuel for a range fire closely arising out of the one set in the segregation unit during the "riotous situation" of August 1972. The documents, once seized, were properly retained thereafter since inmates had reasonable access to them under a newly adopted regulation.

Reasonable access in this context is no better a standard than is "minimal access" in the setting of conferences between an inmate and his counsel. It is one thing to allow an inmate limited though reasonable access to the prison library or to a jailhouse lawyer. Neither can practicably be retained in an inmate's cell, and neither are possessed by him. It is quite another matter to deprive an inmate of an opportunity to pore over a personal and unobtrusive collection of legal books and papers within the confines of his cell. A fact of record abundantly clear is that no ongoing situation of riot and fire existed after August of 1972 or now exists to justify the continued retention of materials. Nor can the Government argue that an ever-present danger of riot justified the withholding of papers; only a few days after the August riot, inmates had clothes and mattresses returned to their possession, both apparently as flammable as the mattresses originally burned. A situation of potential riot — assuming this to result from the presence of combustible objects in segregation cells — has thus existed for the past ten months. Legal materials should not be withheld on the dubious ground that they might serve as additional matter to burn during some future, though unanticipated, disturbance.

The district court shall order the immediate return to appellants of all legal materials previously confiscated and held by Marion authorities.

V

Lastly, appellants argue that their segregation constitutes cruel and unusual punishment. As we understand it, their attack is directed not so much to the conditions of their confinement as to the fact that their sentences to segregation by the Marion Adjustment Committee were indefinite. Alternatively, they argue that the eleven months they have already served are more than sufficient to punish their alleged work stoppage.

From the premise that a term in segregation must be commensurate with the offense for which segregation is imposed, appellants would have us conclude that a prison adjudicative body concerned with discipline must as a constitutional matter impose a definite sentence whenever an inmate appears before it for punishment. The very notion of a "definite" sentence carries with it the implication that an inmate definitely sentenced would be automatically entitled to release after having completed his stay in segregation, his sentence having contemplated within its bounds the full punishment for his infraction of prison rules. To maintain his segregated status beyond his release date, prison officials would be required to resentence him at a hearing identical in its features of due process with the hearing at which he was originally sentenced. The only basis for an additional or extended sentence under these circumstances would be that the inmate had committed infractions while in segregation. Were this arrangement in effect at Marion, we would see no more reason than do appellants to question its constitutionality. But it does not follow that the indefinite sentencing scheme now employed at Marion is unconstitutional per se, for it may in fact provide an inmate with essentially all the protections which attend an arrangement of definite sentencing.

Segregation is imposed at Marion for an indefinite period, with periodic review fixed in frequency by regulation. In addition to the question of whether infractions committed by an inmate while in segregation justify his continuation in that status, Marion officials must decide upon review whether the original infraction committed by the inmate is sufficiently serious to mandate a like result. As long, however, as the former question is asked and answered in an adversary setting identical to that which attended the initial placement of the inmate in segregation, we see no constitutional infirmity in a scheme of indefinite placement. It is, indeed, essentially identical to an arrangement employing definite sentences, except that a segregated inmate's claim of disproportionate punishment becomes justiciable only after he has endured a period of segregation. We do not view this to be a distinction of constitutional importance.

In the second branch of their argument, appellants point to the more than eleven months they have spent in segregation, and assert that this punishment is more than adequate under the Eighth Amendment for a violation of prison work rules. As relief, they seek an order for their release to the general prison population. We reject their plea.

We recognize the general proposition that punishment which is disproportionate to the offense committed constitutes cruel and unusual punishment, whether imposed without or within prison walls. Weems v. United States, 217 U.S. 349, 30 S.Ct. 544, 54 L. Ed. 793 (1910); Wright v. McMann, 321 F. Supp. 127 (N.D.N.Y. 1970); Fulwood v. Clemmer, 206 F. Supp. 370 (D.D.C. 1962). Disproportionality, however, is partly a question of fact and wholly one of degree. An inmate who refuses to shave his beard does not ordinarily deserve solitary confinement; conversely, the mastermind of a large-scale escape attempt or a devastating riot may justly receive more than a few days in isolation from his fellow inmates. Contrary to what appellants would have us believe, the instant case does not present us with this sort of concrete and single violation of prison rules. The appellants have taken part in more than a work stoppage; the record tells us, too, of other misconduct and of disturbances in the segregation units on at least three dates between August and October of 1972. The trial judge ruled:

The hardships imposed upon plaintiffs [by segregation] were a direct result of their violations of prison rules, their attempts to create disturbances amounting to near riots, and their threats to prison personnel and security, verbally, by actions, and by the concealment of contraband and weapons. 352 F. Supp. at 889.

Appellants do not attack the finding as clearly erroneous, and we must accept it. Without a more exact idea of the offenses committed by each inmate, or the classification of inmates by the type and extent of their misbehavior, we cannot properly decide the issue of disproportionate punishment, since we are unwilling to rule in the abstract that punishment by eleven months of segregation for the numerous infractions listed by the trial judge constitutes a violation of the Eighth Amendment. Should the appellants wish to press their contention of disproportionate punishment, the hearings we have ordered and the written memoranda which will result will provide a more satisfactory factual basis for their claim.

The case is remanded to the district court for an appropriate order and for further proceedings in conformity with this opinion. The mandate from this court shall issue forthwith.

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All major misconduct reports will be referred to the Adjustment Committee. Following action by the Adjustment Committee, the Associate Warden and Warden will review the disposition.

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Q. Is it correct, sir, that there was no formal written notice given to — to these men who were put in the segregation unit via the work stoppage before they came before your committee?

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When an inmate is punished by trial in an outside court and the imposition of an additional sentence, it is not considered double punishment to segregate him on normal diet while awaiting action or after conviction, as a precautionary safeguard. There is a distinction between administrative segregation and punitive segregation. Confusion arises from the fact that an inmate is frequently segregated for a comparatively short period as punishment (for an assault with a knife on another inmate, for example) and is then placed in administrative segregation for an indefinite period for the general good of the institution. It may be said the latter type protection of the inmate and the institution is for mutual convenience rather than punishment of the individual.

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Time Limits: Segregation for punishment should be for the shortest period that will accomplish the desired result of making the inmate amenable to discipline, and in any event not over thirty days. With most inmates and for most infractions a period of a few days proves sufficient. In other cases, a few days in punitive segregation followed by thirty to ninety days in administrative segregation, or in some other status that involves continued control or loss of privileges is sufficient. Excessively long periods for punishment defeat their own purpose by embittering and demoralizing the inmate. If he needs to be segregated for a long period, it should be in administrative segregation rather than punitive segregation.

[A] section [of the Model Rules] strongly discourages use of transfer to a Departmental Segregation Unit, the maximum security status which currently exists. Under the proposed rules, inmates can be transferred to D.S.U., if at all, only upon conviction of two major rule violations within a 6-month period. Current regulations do not limit the amount of time which can be served in a D.S.U. Under these rules, a limit of thirty days is set for transfers to D.S.U.

The only exceptions to the thirty day requirement are upon inmate request for protective custody. An inmate requesting transfer to a D.S.U. may remain as long as he chooses, but he will be encouraged to return to the general population or accept transfer to another institution.

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For isolation and separate confinement, increased security arrangements imposed at the institutional level, these rules provide some discretion. Isolation is to be used only for major violations of disciplinary rules (or a persistent pattern of minor violations) and is limited to ten days rather than the current fifteen. The change follows trends in several states.

Separate confinement may be imposed for disciplinary violations for periods of up to thirty days. It may also be used for protective custody.