UNITED STATES COURT OF APPEALS
                                   Tenth Circuit
                        Byron White United States Courthouse
                                 1823 Stout Street
                               Denver, Colorado 80294
                                   (303) 844-3157
    Patrick J.  Fisher, Jr.                                               Elisabeth A. Shumaker
    Clerk                                                            Chief Deputy Clerk
         
                                   July 24, 1997
         
         
         TO:  All recipients of the captioned opinion
         
         RE:  95-2121, Kerr-McGee v. Farley
              95-2127, Kerr-McGee v. Farley
                   June 25, 1997
         
         
              Please be advised of the following correction to the captioned decision:
         
              Due to a clerical error, names of counsel appearing on the appellees' supplemental 
         brief were omitted from the attorney designation list.
         
              A corrected version of that page of the opinion is attached for your convenience.
         
                                            Very truly yours,
         
                                            Patrick Fisher, Clerk
         
         
         
                                            Susie Tidwell
                                            Deputy Clerk
         
         encl.
         

         





                                        FILED
                           United States Court of Appeals
                                    Tenth Circuit
  
                                     JUN 25 1997
  
                                   PATRICK FISHER
                                        Clerk                                      PUBLISH
         
                           UNITED STATES COURT OF APPEALS
         
                                   TENTH CIRCUIT
         
         
         
         KERR-MCGEE CORPORATION,           
                                           
              Plaintiff - Appellant,            
                                           
         and                               
                                           
         CYRUS FOOTE MINERALS  CORPORATION;No. 95-2121
         RIO ALGOM, LTD.;  UMETCO MINERALS 
          CORPORATION; UNION CARBIDE  CORPORATION,
                                           
              Plaintiffs,                       
                                           
         v.                                
                                           
         KEE TOM FARLEY, individually and  
          on behalf of the Estate of Lucy   
         K.  Farley; CARMELITA FARLEY JOE; 
          HAROLD KADY, SR., individually    
          and on behalf of the Estate of    
         Julia  Mae Kady,                  
                                           
              Defendants - Appellees.           
                                           
                                           
                                           
         KERR-MCGEE CORPORATION; RIO  ALGOM,
         LTD.; UMETCO  MINERALS CORPORATION;
         UNION  CARBIDE CORPORATION,       
                                           
              Plaintiffs,                       
                                           

         and                               No. 95-2127
                                           
         CYRUS FOOTE MINERALS  CORPORATION,
                                           
               Plaintiff - Appellant,            
                                           
         v.                                
                                           
         KEE TOM FARLEY, individually and  
          on behalf of the Estate of Lucy   
         K.  Farley; CARMELITA FARLEY JOE; 
          HAROLD KADY, SR., individually    
          and on behalf of the Estate of    
         Julia  Mae Kady,                  
                                           
         Defendants - Appellees.           
                                           

         
         
         
                    Appeal from the United States District Court
                           for the District of New Mexico
                              (D.C. No. CIV-95-438-MV)
         
         
         
         Michael R. Comeau of Carpenter, Comeau, Maldegen, Nixon & Templeman, 
         Santa Fe, New Mexico (Tom Galbraith and R. Neil Taylor, III of Lewis & Roca, 
         Phoenix, Arizona, and Robert N. Hilgendorf, Santa Fe, New Mexico, for 
         Appellant Cyprus Foote Minerals Corporation; Jon J. Indall and Stephen J. Lauer 
         of Carpenter, Comeau, Maldegen, Nixon & Templeman, Santa Fe, New Mexico, 
         for Appellant Kerr-McGee Corporation, with him on the briefs) for Appellants.
         
         Suzelle M. Smith of Howard and Smith, Los Angeles, California (Cherie V. Daut, 
         Shiprock, New Mexico; Justin R. Melat and Rebecca A. Lorenz of Melat, 
         Pressman, Ezell & Higbie, Colorado Springs, Colorado, with her on the brief); 
         and Seth R. Lesser, Richard A. Speirs, and Lisa K. Buckser of Bernstein, 
         Litowitz, Berger & Grossmann, L.L.P., New York, New York, for Appellees.
         
         
         
         
          
         
         
         Before SEYMOUR, Chief Judge, LOGAN and LUCERO, Circuit Judges.
         
         
         
         LUCERO, Circuit Judge.
         
         
         
         
              This case involves the scope of the tribal exhaustion rule in the context of 

         the Price-Anderson Act.  Appellants Kerr-McGee and Cyprus Foote Minerals 

         (collectively "Kerr-McGee") filed a claim in the District of New Mexico for a 

         declaratory judgment and preliminary injunction, arguing that the Navajo Tribal 

         Court is without jurisdiction to adjudicate nuclear tort claims against Kerr-

         McGee.  Applying the tribal exhaustion rule, the district court denied the 

         injunction and stayed further action in federal court until the tribal court ruled on 

         jurisdiction.  Our jurisdiction to hear Kerr-McGee's interlocutory appeal arises 

         under 28 U.S.C.  1292(a)(1).  We affirm.

         

                                   I.  BACKGROUND

              Kerr-McGee milled uranium on the Navajo Reservation between 1952 and 

         1973, leasing land for the mill site from the tribe.  Kerr-McGee sold the mill's 

         entire production to the federal government.  In 1995, defendants (the "Tribal 


         Claimants"), who are members of the Navajo Tribe and residents of the 

         reservation, filed a complaint in Navajo Tribal Court, alleging that the Kerr-

         McGee mill released vast quantities of radioactive and toxic materials, causing 

         them injuries.  Before the tribal court had proceeded with the case, Kerr-McGee 

         filed the instant suit.  

              In the district court, Kerr-McGee argued that the tribal court had no 

         jurisdiction to consider nuclear tort claims and should be enjoined in its 

         proceedings, basing its conclusion on the Price-Anderson Act, 42 U.S.C.  2011 

         et seq.  Kerr-McGee contends that the Price Anderson Act grants exclusive 

         federal jurisdiction over nuclear torts if a defendant so wishes.  The district court 

         disagreed, finding that the Price-Anderson Act does not specifically divest tribal 

         courts of jurisdiction over such claims.  Because there is no explicit mention of 

         exclusive federal court jurisdiction over Price-Anderson claims, the district court 

         reasoned that the tribal court should ordinarily be given the first opportunity to 

         determine its own jurisdiction.  Moreover, because the Tribal Claimants alleged a 

         cause of action based on torts committed on the reservation, the district court felt 

         no need to engage in any extended comity analysis regarding the decision to defer 

         to the Navajo Tribal Court.  It concluded that the proper practice was to stay the 

         federal court proceedings until the tribal court had determined its jurisdiction.    

              Thereafter, the District Court of the Navajo Nation issued an order finding 

         tribal court jurisdiction over the tort claims asserted by the Tribal Claimants.
         
         Farley v. Kerr-McGee, No. 103-95 (Navajo D. Ct. Aug. 1, 1996).  Specifically, 

         the Navajo court held that the Price-Anderson Act does not preempt the Tribal 

         Claimants' Navajo law right to tribal court adjudication of the alleged torts.  In 

         fact, the Navajo court concluded that the Price-Anderson Act does not apply at all 

         to the Tribal Claimants' suit and, therefore, tribal court jurisdiction could not 

         interfere with Congressional intent in federal regulation of nuclear activity.  We 

         are unaware of any appeal by Kerr-McGee of the Navajo District Court order.

                                  II.  DISCUSSION

              The scope of a tribal court's jurisdiction is a federal question over which 

         federal district courts have jurisdiction.  National Farmers Union Ins. Cos. v. 

         Crow Tribe, 471 U.S. 845, 853 (1985).  The district court's determination of the 

         proper scope of the tribal exhaustion rule is reviewed de novo.  Texaco v. Zah, 5 

         F.3d 1374, 1376 (10th Cir. 1993).

                                         A

              The tribal exhaustion rule was created in National Farmers, a case 

         involving a tort suit by a tribal member against a school district and its insurer. 

         The tribal member brought suit in tribal court, and the defendants promptly sued 

         in federal court for a declaration that the tribal court had no jurisdiction to 

         entertain a civil suit against a non-Indian, even where the alleged tort took place
         
         on the reservation.  Rather than further extending the rule in Oliphant(1) to tribal 

         jurisdiction over civil matters, the Supreme Court concluded:

              [T]he existence and extent of a tribal court's jurisdiction will require 
              a careful examination of tribal sovereignty, the extent to which that 
              sovereignty has been altered, divested, or diminished, as well as a 
              detailed study of relevant statutes, Executive Branch policy as 
              embodied in treaties and elsewhere, and administrative or judicial 
              decisions.
         
         National Farmers, 471 U.S. at 856.  Moreover, "that examination should be 

         conducted in the first instance in the Tribal Court itself."  Id.   This rule of tribal 

         court exhaustion is subject to a narrow set of exceptions, including: (1) "where an 

         assertion of tribal jurisdiction is motivated by a desire to harass or is conducted in 

         bad faith"; (2) "where the action in tribal courts is patently violative of express 

         jurisdictional prohibitions"; or (3) "where exhaustion would be futile because of 

         the lack of an adequate opportunity to challenge the tribal court's jurisdiction." 

         Id. at 857 n.21 (internal quotation and citation omitted).

              The tribal exhaustion rule was extended and explained in Iowa Mutual 

         Insurance Co. v. LaPlante, 480 U.S. 9 (1987).  There, the Court held that the 

         statute granting federal courts jurisdiction over diversity actions, 28 U.S.C.  

         1332, does not divest tribal courts of jurisdiction over acts involving non-Indians
         



























         (1)      In Oliphant v. Suquamish Indian Tribe, tribal courts were found to lack criminal 
         jurisdiction over non-Indians for crimes committed on the reservation.  435 U.S. 191, 
         208-12 (1978). 
         
         taking place on tribal land.  With respect to the exhaustion requirement, the Court 

         held that "proper respect for tribal legal institutions requires that they be given a 

         `full opportunity' to consider the issues before them and `to rectify any errors.'" 

         Id. at 16 (quoting National Farmers, 471 U.S. at 857).  Because "the federal 

         policy of promoting tribal self-government encompasses the development of the 

         entire tribal court system . . . exhaustion of tribal remedies means that tribal 

         appellate courts must have the opportunity to review the determinations of the 

         lower tribal courts."  Id. at 16-17.  Consequently, federal courts should not 

         intervene until the tribal courts have had a full opportunity to evaluate 

         jurisdiction.  Id. at 17.

              The precise question we address is not whether the Navajo courts have 

         jurisdiction over the claims brought by the Tribal Claimants, but whether the 

         Price-Anderson Act so obviously preempts tribal jurisdiction that an action in 

         tribal court "would be patently violative of express jurisdictional prohibitions," 

         and that abstention in favor of tribal exhaustion is inappropriate.  National 

         Farmers, 471 U.S. at 856 n.21.  A substantial showing must be made by the party 

         seeking to invoke this exception to the tribal exhaustion rule.  See Iowa Mut., 480 

         U.S. at 19 n.12 (party's assertion that "tribal court jurisdiction over outsiders `is 

         questionable at best,'" insufficient to defeat the tribal exhaustion requirement). 

         In fact, tribal courts rarely lose the first opportunity to determine jurisdiction
         
         because of an "express jurisdictional prohibition."  Cases in which tribal courts 

         are not given the first opportunity to determine their jurisdiction typically involve 

         situations where the federal court has exclusive jurisdiction, see Blue Legs v. 

         Bureau of Indian Affairs, 867 F.2d 1094, 1097-98 (8th Cir. 1989), or where tribal 

         jurisdiction is foreclosed by sovereign immunity, see United States v. Yakima 

         Tribal Court, 806 F.2d 853, 860-61 (9th Cir. 1986).

              Kerr-McGee makes two tightly interwoven arguments in support of its 

         position that Price-Anderson contains an "express prohibition" on tribal court 

         jurisdiction despite the absence of statutory language explicitly addressing tribal 

         fora.  First, Kerr-McGee notes that 1988 amendments to Price-Anderson create 

         specific procedures for adjudicating nuclear torts in federal court, and provide for 

         an absolute right of removal to federal court.  These procedures were explicitly 

         designed to consolidate jurisdiction over claims arising from a nuclear incident in 

         a single federal forum.  Allowing jurisdiction to arise in "any one of a patchwork 

         of tribal judicial entities that exist throughout the West," Appellant's Br. at 19, 

         would run counter to the express purposes of the Act as amended in 1988.  Thus, 

         the Price-Anderson Act and its amendments have expressly provided for exclusive 

         federal court jurisdiction in this case, and the tribal court's assertion of authority 

         is "patently violative of express jurisdictional prohibitions."  National Farmers, 

         471 U.S. at 857 n.21.  Second, even if we do not read the Price-Anderson Act
         
         amendments to create exclusive federal court jurisdiction, Kerr-McGee claims 

         that because the federal government has preempted the entire field of nuclear 

         torts, tribal jurisdiction, whether regulatory or adjudicatory, will not lie unless 

         specifically provided for by statute.  Under either argument, Kerr-McGee asserts 

         jurisdiction is indirectly but expressly prohibited.

              The Tribal Claimants dispute Kerr-McGee's construction of the law.  They 

         argue that even if federal regulation has limited tribal regulatory authority over 

         Kerr-McGee's uranium milling, that does not imply adjudicatory preemption in 

         the circumstances of this case.  Given Price-Anderson's silence, civil jurisdiction 

         over the activities of non-Indians on reservation land should be presumed to lie 

         with the tribal court even if Congress has chosen to federalize the substantive law 

         governing those activities.  That presumption could be overcome, but only by an 

         express statement removing tribal court adjudicatory authority, and Price-

         Anderson contains no such statement.  Alternatively, plaintiffs contend that Price-

         Anderson does not apply to this case at all because Kerr-McGee does not have an 

         indemnity agreement with the federal government.  To assess these various 

         competing arguments, we turn to the genesis and development of the Price-

         Anderson "system" governing nuclear torts, and determine how far down the road 

         of exclusive federal court jurisdiction Congress went in the Price-Anderson 1988 

         amendments.


                                         B     
         
              The Atomic Energy Act (AEA) was created in 1954 to facilitate a transition 

         from a federal government monopoly over the production and use of atomic 

         materials to a regime in which private industry also would have a role in their 

         production and use.  Pacific Gas & Elec. Co. v. State Energy Resources 

         Conservation and Dev. Comm'n, 461 U.S. 190, 206-07 (1983).  Limiting the 

         states' role in regulating atomic energy, Congress granted a federal agency, the 

         Atomic Energy Commission (later the Nuclear Regulatory Commission), 

         "exclusive jurisdiction to license the transfer, delivery, receipt, acquisition, 

         possession, and use of nuclear materials."  Id. at 207.  Hazards arising from 

         atomic radiation were made a particularly federal concern, as to which the states 

         had no authority to regulate.  Id. at 209-10.  Accordingly, with very few 

         exceptions, state attempts to regulate in this area are preempted.

              In 1957, Congress amended the AEA through the Price-Anderson Act 

         (PAA), creating specific protections from tort liability for the nuclear industry. 

         See Silkwood v. Kerr-McGee Corp., 464 U.S. 238, 251 (1984).  The PAA 

         contains three distinct elements: (1) an aggregate ceiling on the liability for 

         nuclear tort claims; (2) a "channeling of liability" to protect private entities from 

         liability for their indirect participation in atomic development; and (3) an 

         indemnification program, through which the federal government would require
         
         private insurance coverage to a certain level, and pay public liability claims above 

         that amount, up to the liability ceiling created by the PAA.  In re TMI Litig. 

         Cases Consol. II ("TMI II"), 940 F.2d 832, 852 (3d Cir. 1991).  While the PAA 

         specifically made nuclear industry liability a federal concern, Congress initially 

         chose not to create a specific federal cause of action for nuclear torts; rather, the 

         legislative history suggests that Congress was content to allow liability to be 

         dictated by existing causes of action.  Silkwood, 464 U.S. at 252-55 (finding state 

         punitive damages statute not preempted by the PAA).  

              The PAA has been amended several times, further refining the relationship 

         between federal and state roles regarding nuclear torts, and the protections to be 

         afforded private industry and the general public.  Recent amendments, the Price 

         Anderson Amendments Act of 1988, Pub. L. No. 100-408, 102 Stat. 1066 (1988) 

         ("1988 Amendments"), which is the law at issue in this case, arose out of 

         congressional understanding that the Price-Anderson system "provides persons 

         seeking compensation for injuries as a result of a nuclear incident with significant 

         advantages over the procedures and standards for recovery that might otherwise 

         be applicable under State tort law. . . . [It] also provides a mechanism whereby 

         the federal government can continue to encourage private sector participation in 

         the beneficial uses of nuclear materials."  S. Rep. No. 100-218, at 4 (1988). 

         While not otherwise superseding the decision in Silkwood, the 1988 Amendments
         
         can be read in part as a congressional response to the result in Silkwood 

         suggesting that the PAA never preempts state punitive damages awards.  TMI II, 

         940 F.2d at 870 n.3 (Scirica, J., concurring).     

              The 1988 Amendments expand federal jurisdiction over claims arising out 

         of a "nuclear incident":

              With respect to any public liability action arising out of or resulting 
              from a nuclear incident, the United States district court in the district 
              where the nuclear incident takes place . . . shall have original 
              jurisdiction without regard to the citizenship of any party or the 
              amount in controversy.  Upon motion of the defendant or of the 
              Commission, or the Secretary, as appropriate, any such action 
              pending in any State court (including any such action pending [on the 
              date of the 1988 Amendments]) or United States district court shall 
              be removed or transferred to the United States district court having 
              venue under this subsection.
         
         42 U.S.C.  2210(n)(2) (emphasis added).  A "public liability action" is defined 

         as "any suit asserting public liability."  42 U.S.C.  2014(hh).  Moreover, a public 

         liability action "shall be deemed to be an action arising under section 2210 of this 

         title [which creates a federal forum for suit]."  Id.   "Public liability" is sweeping: 

         it encompasses any legal liability from "nuclear incidents," which in turn are 

         defined in  2014(q) to include any occurrence causing any personal or property 

         damage arising out of the toxic, radioactive, explosive or other hazardous 

         properties of atomic or byproduct materials.  42 U.S.C.  2014(w).  


              The 1988 Amendments also create other federal rules with respect to public 

         liability actions.  Section 2210(n)(3) creates specific federal court procedures for 

         dealing with a mass nuclear incident, including a mechanism to fashion a caseload 

         management panel empowered to consolidate claims and develop procedures for 

         their resolution.  42 U.S.C.  2210(n)(3).  While creating a federal cause of action 

         over "nuclear incidents," the 1988 Amendments explicitly state that the 

         substantive rules of decision for a public liability action "shall be derived from 

         the law of the State in which the nuclear incident involved occurs, unless such 

         law is inconsistent with the provisions of such section."  42 U.S.C.  2014(hh).  

              From this framework, it is apparent that Congress intended to expand 

         federal control over safety and liability issues involving the nuclear industry, 

         particularly with respect to the role of federal courts in resolving liability.  Prior 

         to 1988, only a subclass of nuclear incidents, "extraordinary nuclear 

         occurrences," triggered absolute federal rights of removal.  TMI II, 940 F.2d at 

         853 n.18.  Kerr-McGee notes that defendants may now choose to have federal 

         courts, rather than state, determine liability even though the substantive rule of 

         decision may derive from state law, and argues from that proposition that, 

         together with the creation of specific procedural mechanisms in federal courts to 

         deal with complex or extensive nuclear incident litigation, the framework
         
         suggests a congressional interest in allowing litigants to make federal courts the 

         home for such litigation.

              The Tribal Claimants first contend that we need not even consider the 

         jurisdictional provisions of the 1988 Amendments.  Citing Silkwood, they assert 

         that the PAA system simply does not apply to this case because Kerr-McGee does 

         not have an indemnity agreement with the federal government.  This argument 

         misreads Silkwood, which simply refused to apply the indemnification provisions 

         of the PAA to the claim in that case because the defendant lacked the necessary 

         indemnity agreement.  Silkwood, 464 U.S. at 252 n.12.  Nothing in Silkwood 

         suggests that the absence of an indemnity agreement makes the PAA's 

         jurisdictional provisions inapplicable.  Furthermore, as quoted above, the 

         jurisdictional provisions of the PAA, 42 U.S.C.  2014(w), 2210(n), as amended 

         by the 1988 Amendments, appear broad enough to create a federal forum for any 

         tort claim even remotely involving atomic energy production.  The PAA on its 

         face provides the sole remedy for the torts alleged in this case, and we must 

         therefore consider its jurisdictional provisions.  

                                         1

              Kerr-McGee argues that the PAA's jurisdictional and liability provisions 

         strongly suggest Congress intended something very close to exclusive 

         jurisdiction: under the 1988 Amendments, the plaintiff to a nuclear incident claim
         
         can bring her case in federal court if she wants, and the defendant has the 

         absolute right of removal from state court.  As the legislative history of the 1988 

         Amendments indicates, this jurisdictional framework was intended to prevent 

         inefficient fragmentation and inconsistent resolution of nuclear tort claims by 

         providing for their consolidation in federal court. See O'Conner v. 

         Commonwealth Edison Co., 13 F.3d 1090, 1102 (7th Cir. 1994) (citing S. Rep. 

         No. 100-218, at 13; H.R. Rep. No. 100-104, pt. 3, at 30 (1988)).  Yet, the Tribal 

         Claimants correctly point out that the 1988 Amendments do not explicitly create 

         exclusive federal court jurisdiction over nuclear incident litigation, as Congress 

         has created, for example, in other contexts.  See, e.g., Blue Legs, 867 F.2d at 

         1098 ("`Any action [under the relevant RCRA provision] shall be brought in the 

         district court for the district in which the alleged violation occurred.'" (quoting 42 

         U.S.C.  6972(a)) (emphasis added)).  That said, Congress may have intended the 

         option of voluntary removal-which it did not provide in RCRA-because the 

         federal substantive rule of decision is still based in part on state law.  See 42 

         U.S.C.  2014(hh).  It could thus be argued that state courts are left with 

         jurisdiction not for federalism-driven comity reasons, but rather for efficiency 

         reasons.  The argument pressed by Kerr-McGee, that there exists a jurisdictional 

         prohibition on all forums not mentioned in the 1988 Amendments, has some 

         force.


              In the end, however, we are not persuaded that the PAA regime expressly 

         prohibits the exercise of tribal jurisdiction.  The PAA does not include removal 

         from tribal courts in its jurisdictional grant, and we are unwilling to speculate on 

         what Congress might have done with public liability actions commenced in the 

         tribal courts.  We cannot conclude that the 1988 Amendments created an 

         exclusive enclave of federal adjudicatory control such that tribal courts lack 

         jurisdiction to decide PAA claims, even those arising out of torts against tribal 

         members on the reservation.(2)  Becenti v. Vigil, 902 F.2d 777 (10th Cir. 1990), is 

         instructive.  There, we held that the federal removal statute for claims against 

         federal officers, 28 U.S.C.  1442(a)(1), does not authorize removal from tribal 

         courts.  Id. at 780.  The rationale for the removal statute, forbidding federal 

         officers from being forced to answer for their conduct in any but a federal forum, 

         mirrors the PAA's interest in allowing any party to a nuclear incident to take 

         advantage of the federal forum.  While Becenti asks whether a statute conferring 

         jurisdiction on federal courts for certain claims filed first in state court also 

         includes jurisdiction for similar claims filed first in tribal court, here we face the question of whether a statute that almost completely consolidates state court 

         jurisdiction in federal courts should be read to strip jurisdiction from tribal courts 

         as well.  We follow the rationale of Becenti and conclude that federal jurisdiction 

         grants are read parsimoniously to elide collision with tribal court jurisdiction. 

         Simply put, "exclusive jurisdiction" is not conferred unless conferred explicitly.

                                         2

              Once we conclude that the PAA's jurisdictional provisions do not create 

         exclusive federal court jurisdiction over nuclear incidents, the Tribal Claimants 

         urge us to apply the basic jurisdictional presumption of Iowa Mutual, namely that 

         tribal civil jurisdiction over "activities of non-Indians on reservation lands . . . 

         presumptively lies in the tribal courts unless affirmatively limited by a specific 

         treaty or provision or federal statute."  Iowa Mut., at 18 (citing Montana, 450 

         U.S. at 565-66) (further citations omitted).  "`Because the Tribe retains all 

         inherent attributes of sovereignty that have not been divested by the Federal 

         Government, the proper inference from silence . . . is that the sovereign power . . . 

         remains intact.'" Id. (quoting Merrion v. Jicarilla Apache Tribe, 455 U.S. 130, 

         148 n.14 (1982)).  Noting the PAA's silence with respect to tribal court 

         jurisdiction, the Tribal Claimants contend that we must presume the Navajo courts 

         (2)     Kerr-McGee seizes on language from Smith v. General Electric Co., 938 F. Supp. 
         70, 75 (D. Mass. 1996), a district court case it brought to our attention after oral argument 
         in this case.  Smith states that the 1988 Amendments "created a jurisprudential curiosity, 
         an action grounded in state law committed to the exclusive jurisdiction of the federal 
         courts."  Id.  Smith, however, does not address the issue of tribal jurisdiction and cannot 
         be read to speak to the question presented here.
         
         retain jurisdiction to adjudicate the tort claims.  Certainly, they argue, statutory silence cannot be converted into an "express jurisdictional prohibition" on the 

         exercise of tribal adjudicatory authority.

              Relying primarily on Montana, 450 U.S. 544, Kerr-McGee urges a different 

         presumption from silence in cases where Congress has comprehensively regulated 

         the field.   Kerr-McGee suggests that the Iowa Mutual presumption from silence 

         does not apply in cases controlled by the PAA, because tribal adjudicatory power 

         over such claims lies "beyond what is necessary to protect tribal self-government 

         or to control internal relations . . . and so cannot so survive without express 

         congressional delegation."  Montana, 450 U.S. at 564.  Kerr-McGee cites to other 

         cases in which tribes are presumed to lack jurisdiction over nonmembers even 

         without specific congressional language stripping tribal authority.  In South 

         Dakota v. Bourland, 508 U.S. 679 (1993), the Court held that a tribe lacked 

         regulatory authority to license nonmember hunters and fishermen for activity on 

         reservation lands that the federal government was extensively regulating for 

         public purposes.  Four years earlier, in Brendale v. Confederated Tribes and 

         Bands of the Yakima Indian Nation, 492 U.S. 408 (1989), the Court found that the 

         tribe lacked authority to zone activities of nonmembers on open fee lands within 

         the reservation.  Kerr-McGee argues that the PAA so extensively regulates 

         nuclear production and development, see Pacific Gas & Elec., 461 U.S. at 206-07, 

         that, as in Montana, Brendale, and Bourland, whatever inherent sovereignty the
         
         tribe may have originally enjoyed in this area has been divested by congressional 

         legislation.  Thus, absent a specific grant of jurisdiction, tribal authority must be 

         presumed absent.(3)      

              The proper inference to be drawn from silence presents questions that 

         might require reconciling two arguably divergent strands of caselaw.(4)  This is a 

         difficult issue, and the difficulty itself belies Kerr-McGee's assertion that tribal 

         authority here would be "patently violative of express jurisdictional prohibitions."  National Farmers, 471 U.S. at 856 n.21.(5)  Strate v. A-1 Contractors, 117 S. Ct. 1404 (1997), relied on by Kerr-McGee, is not a tribal exhaustion case; there, 
the 

         federal plaintiffs first challenged tribal jurisdiction in the tribal courts.  See 

         Strate, 117 S. Ct. 1408.  Thus, the federal court never sought to identify an 

         "express jurisdictional prohibition," but rather was in the position to address 

         whether tribal adjudicatory power remains over civil disputes involving 

         nonmembers on state highways within the reservation.  By asking us to reach the 

         merits of its jurisdictional challenge before it has run its course in the tribal 

         courts, Kerr-McGee ignores the important congressional interest advanced by the 

         tribal exhaustion rule.(6)  

               Ultimately, this case requires an attempt to accommodate two independent 

         and important congressional concerns: comity interests flowing from tribal 

         sovereignty and nuclear energy regulation.  Though a close question, we cannot 

         conclude that the 1988 Amendments, or the PAA's scope generally, create an 

         "express prohibition" to tribal court jurisdiction.  Congress intended to control 

         where and how nuclear incident litigation is to take place, but did not take the 

         next step of specifically divesting tribal courts of jurisdiction.  While the precise 

         scope of retained tribal jurisdiction in this case is subject to reasonable debate, 

         tribal adjudicatory authority over this nuclear incident is not "patently violative of 

         an express jurisdictional prohibition."  

                                         C
         
              The tribal exhaustion requirement created by National Farmers is based on 

         comity concerns for Indian tribes in maintaining their remaining sovereignty. 

         National Farmers recognizes that three specific interests are advanced by proper 

         application of the rule: (1) furthering congressional policy of supporting tribal 

         self-government; (2) promoting the orderly administration of justice by allowing a 

         full record to be developed in the tribal court; and (3) obtaining the benefit of 

         tribal expertise if further review becomes necessary.  National Farmers, 471 U.S.
         (3)       Kerr-McGee also cites UNC Resources, Inc. v. Benally, 518 F. Supp. 1046 (D. 
         Ariz. 1981) for the proposition that tribes lack jurisdiction to adjudicate claims falling 
         within the scope of the Price-Anderson Act.  This case is outdated, however, because it 
         incorrectly predicts the outcome in National Farmers, extending the reasoning of Oliphant 
         to civil cases (which National Farmers specifically refused to do).  Compare Benally, 518 
         F. Supp. at 1051 with National Farmers, 471 U.S. at 856.  Benally also asserted that tribal 
         jurisdiction "conflicts with the superior federal interest in regulating the production of 
         nuclear power."  Id. at 1052.  Considering that the Benally court improperly weighed the 
         tribal court's interest, its discussion of the federal interest in Price-Anderson Act actions 
         must be discounted.
         (4)     On this point, the recently issued Supreme Court opinion in Strate v. A-1 
         Contractors, 117 S. Ct. 1404 (1997), is instructive.  Reviewing Strate, this panel invited 
         the parties to submit supplementary briefs on its significance to this case.  In Strate, the 
         Supreme Court found that, absent a treaty or statute, a tribe lacked jurisdiction to 
         adjudicate a dispute between nonmembers of the tribe arising out of an automobile 
         accident occurring on a state highway.  Id. at 1407-08.  Relying principally on Montana, 
         the Court held that with respect to lands over which the tribe had ceded sovereign 
         authority, tribal jurisdiction is substantially limited.  Id. at 1413.  After carefully 
         reviewing Strate, we conclude it is of limited usefulness in our case.  Kerr-McGee's 
         alleged torts did not occur on lands over which the tribe has ceded authority and control 
         to another sovereign for an indefinite period.  Here, the lease was to a private entity and 
         for a finite period.  The Supreme Court simply has not spoken to such a situation.  See id. 
         at 1408 ("We express no view on the governing law or proper forum when an accident 
         occurs on a tribal road within a reservation.")    
         (5)     In support of its contention that an "express jurisdictional prohibition" need not be 
         quite "express," Kerr-McGee cites Lower Brule Construction v. Sheesley's Plumbing, 84 
         B.R. 638 (D.S.D. 1988).  There, the district court, citing Oliphant, held that tribal 
         exhaustion was not necessary for an adversary proceeding in bankruptcy, even if a body 
         of bankruptcy law existed in tribal courts.  This case is notable because it appears that theunderlying action (involving dishonor of a note) was originally commenced in state court, 
         and federal courts do not constitute the exclusive forum for adjudicating "non-core" 
         proceedings instituted before the filing of the bankruptcy petition.  See 28 U.S.C.  
         157(b)(4); In re Colorado Energy Supply, Inc., 728 F.2d 1283, 1285-86 (10th Cir. 1984). 
         Thus, Lower Brule could stand for the proposition that tribal exhaustion is not necessary 
         in areas where a federal procedure predominates.  However, we find Lower Brule 
         conclusory and unpersuasiveit assumes without analysis that a tribe has no 
         governmental interest in a contract between the debtor and the tribe regarding a tribal 
         housing project on the tribe's reservation.  Moreover, it appears that the district court 
         improperly melded the question of an express jurisdictional prohibition with the 
         recognition of comity concerns.
         (6)     Kerr-McGee, in its supplementary brief, points to the statement in Strate that "[a]s 
         to nonmembers, we hold, a tribe's adjudicative jurisdiction does not exceed its legislative 
         jurisdiction."  Strate, 117 S. Ct. at 1413.  Kerr-McGee suggests that no adjudicative 
         jurisdiction can exist in the Navajo tribal courts because the PAA preempts all tribal 
         regulatory jurisdiction.  Yet, even if the Supreme Court's statement can be read outside of 
         its concern for tribal jurisdiction over non-Indian fee lands, the PAA is unclear on the 
         extent to which state (or tribal) law may inform the issue of a nuclear tortfeasor's liability. Pursuant to the tribal exhaustion rule, this question should first be addressed in tribal 
         court.
         
         at 856-57.  If, as in this case, none of the National Farmers exceptions is present, 

         the court must then make an inquiry whether to abstain based on these concerns.  

         So long as the policies behind the tribal exhaustion rule are served by its 

         application, "comity requires the parties to exhaust their tribal remedies before 

         presenting their dispute to the district court."  Zah, 5 F.3d at 1378.    

              We have taken a strict view of the tribal exhaustion rule and have held that 

         "federal courts should abstain when a suit sufficiently implicates Indian 

         sovereignty or other important interests."  Pittsburg & Midway Coal Mining Co. 

         v. Watchman, 52 F.3d 1531, 1542 (10th Cir. 1995).  As the Tribal Claimants 

         correctly assert, this court at times abstains without making a detailed comity 

         analysis, holding that "when the dispute is a `reservation affair' there is no 

         discretion not to defer."  Zah, 5 F.3d at 1378 (citing Crawford v. Genuine Parts 

         Co., 947 F.2d 1405, 1408 (9th Cir. 1991) (accident on the reservation involving 

         tribal members "arises on the reservation" within meaning of National Farmers 

         presumptive tribal jurisdiction)).  When the activity at issue arises on the 

         reservation, comity concerns "almost always dictate that the parties exhaust their 

         tribal remedies before resorting to the federal forum."  Id.  Conversely, "[w]hen 

         the dispute involves non-Indian activity occurring outside the reservation . . . the 

         policies behind the tribal exhaustion rule are not so obviously served.  Under 

         these circumstances, we must depend on the district courts to examine assiduously
         
         the National Farmers factors in determining whether comity requires the parties to 

         exhaust their tribal remedies before presenting their dispute to the federal courts." 

         Id.; United States v. Tsosie, 92 F.3d 1037, 1042-43 (10th Cir 1996) (same).

              Here, the Tribal Claimants suggest that we need not even weigh the comity 

         factors because of the nature of the underlying action.  We agree that strong tribal 

         interests are implicated by these claims.  The mill that allegedly produced the 

         toxic and radioactive waste was located on the reservation pursuant to a lease 

         with the tribe, and the alleged victims of the tort are tribal members residing on 

         the reservation.  The tribal nexus is strong, as is the interest of the tribe as a 

         sovereign in protecting and vindicating the rights of its residents, as well as its 

         interest as lessor of the land for the mill.  Yet, Kerr-McGee's argument that this is 

         not a classic "reservation affair" has some force.  Nuclear production is of 

         national interest, the mill sold its entire production to the federal government, and 

         the orderly administration of claims arising out of the United States' atomic 

         energy and weapons program implicates concerns far beyond the borders of the 

         reservation.  While the district court appeared to consider the tort claims "a 

         reservation affair" and therefore reviewed the comity factors only briefly, the 

         unique concerns implicated in this case deserve a more thorough comity analysis.  

              In this case, the first factor most strongly supports abstention.  If courts are 

         to honor Congress's commitment to tribal self-government, tribal courts must be
         
         allowed to exercise their authority over mass toxic tort claims occurring within 

         their jurisdiction and alleging injury to tribal members, absent overwhelming 

         countervailing concerns.  Even Strate and Montana, cases that curtailed tribal 

         authority over non-Indians, recognized that tribes retain a core sovereign interest 

         in protecting the health and welfare of the tribe such that they may regulate non-

         Indians on all lands within the reservation.  Strate, 117 S. Ct. at 1415; Montana, 

         450 U.S. at 566.  This appears to be such a case.  

              The second factor, the orderly administration of justice, does not so 

         obviously cut in favor of tribal exhaustion.  The PAA, contemplating mass tort 

         litigation arising from a nuclear incident, creates specific procedures to facilitate 

         and consolidate adjudication of such claims.  Though National Farmers 

         recognizes that allowing tribal courts to make initial jurisdictional determinations 

         minimizes a potential "procedural nightmare," it is not clear that such a 

         justification holds here.  Because of Iowa Mutual's expansive abstention, we are 

         required to allow full exhaustion of tribal court litigation, potentially including 

         litigation of the merits.  Given Congress's authorization of specific procedures for 

         dealing with these cases in federal court, abstaining in favor of the tribal court 

         hardly seems to minimize the prospect of a "procedural nightmare."(7)   It is
         






















         (7)     Currently, there appears to be litigation involving Cyprus Foote's Uranium mines 
         in at least two separate Navajo tribal courts, as well as in the federal courts of the Ninthand Tenth Circuits.  See Farley v. Kerr-McGee, No. SR-CV-103-95 (Navajo D. Ct., 
         District of Shiprock); Richards v. Texas Zinc, KY-CV-002-95 (Navajo D. Ct., District of 
         Kayenta); Kerr-McGee v. Farley, No. 95-438 (D. N.M.); El Paso Natural Gas v. 
         Neztsosie, No. 96-49/ 96-1524 (D. Ariz.).  The Price-Anderson Act has instituted 
         procedures specifically designed to avoid this sort of atomized litigation and the 
         "procedural nightmares" attendant to it.  
         
         difficult to balance the loss of specific procedures developed by the PAA for case 

         consolidation and case management of cases such as these against the full record 

         that will be developed in tribal courts by virtue of federal court abstention.

              The third comity consideration, obtaining the benefit of tribal court 

         expertise may be of value in this case.  42 U.S.C.  2014(hh) requires that the 

         substantive rules of decision in such actions are to be derived from the "law of the 

         State in which the nuclear incident involved occurs, unless such law is 

         inconsistent with the provisions of such section."  At oral argument, counsel for 

         the Tribal Claimants argued that the substantive rule of decision in this case 

         should be derived from Navajo tribal law.

              Upon reviewing the comity factors, we conclude that abstention is 

         appropriate.  Kerr-McGee contends that it is inappropriate to analyze the tribal 

         court jurisdiction question and the comity factors separately.  Specifically, it 

         argues that our comity analysis must consider the strong role afforded federal 

         courts in resolving Price-Anderson suits.  We disagree.  The National Farmers 

         framework does not accord countervailing federal concerns a place in the comity analysis.  Consideration of federal jurisdictional concerns is only appropriate in 

         the context of determining whether to engage in the comity analysis at all.

               It does not serve Congress's interest in promoting development of tribal 

         courts, see Iowa Mutual, 480 U.S. at 19, to second-guess the jurisdictional 

         determinations of the Navajo district court before the tribal appellate process has 

         run its course.  The district court's judgment is AFFIRMED.

         

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