witnesses the party intends to present, the subject upon and the languages in which such witnesses will give their testimony. (3) The Tribunal shall make arrangements for the translation of oral testimony made at a hearing and for a record of the hearing if either is deemed necessary by the Tribunal under the circumstances of the case, or if the parties have agreed thereto and have communicated their agreement to the Tribunal at least 15 days before the hearing. (4) Hearings shall be held in camera unless the parties agree otherwise. The Tribunal may require the retirement of any witness during the testimony of other witnesses. The Tribunal is free to determine the name under which witnesses are examined. (5) Evidence of witnesses may also be presented in the form of written statements signed by them. (6) The Tribunal shall determine the advisability, relevance, materiality and weight of the evidence offered. (7) The Tribunal may adjourn any hearing to a subsequent date. (8) If a party fails to appear at a hearing or to produce evidence, the Tribunal may continue the proceedings and make an award on the evidence on record. (9) At any time during the arbitral proceedings, the Tribunal may require the parties to produce documents, exhibits or other evidence within such time as the Tribunal shall determine. Rule 26: Experts (1) (2) The Tribunal may:(a) appoint one or more experts to report to it on any specific issue to be determined by the Tribunal and; (b) require a party to give, produce or provide to such expert any relevant information, documents, goods or other property for inspection. Upon receipt of the expert’s report, the Tribunal shall communicate a copy of the report to each party which shall be given the opportunity to present its written opinion on the report. 13