Within thirty days after December 22, 1974, the Director of the Federal Mediation and Conciliation Service shall appoint a Mediator (hereinafter referred to as the “Mediator”) who shall assist in the negotiations for the settlement and partition of the relative rights and interests, as determined by the decision in the case of Healing v. Jones (210 F. Supp. 125, D. Ariz., 1962, aff’d 363 U.S. 758, 1963) (hereinafter referred to as the “Healing case”), of the Hopi and Navajo Tribes (hereinafter referred to as the “tribes”) to and in lands within the reservation established by the Executive order of December 16, 1882, except land management district no. 6 (such lands hereinafter referred to as the “joint use area”). The Mediator shall not have any interest, direct or indirect, in the settlement of the interests and rights set out in this subsection. The duties of the Mediator shall cease upon the entering of a full agreement into the records of the supplemental proceedings pursuant to section
640d–2 of this title or the submission of a report to the District Court after a default in negotiations or a partial agreement pursuant to section
640d–3 of this title.