An account of the events that gave rise to the dispute, the commencement of the arbitration and the initial constitution of the Tribunal were set out in the Preface to the Tribunal's Partial Award dated 13 November 2000 (the First Partial Award or FPA). For present purposes, it is sufficient to record that the Tribunal was duly constituted and became seized of the arbitration on 4 March 1999. The constitution of the Tribunal changed following the resignation of Mr Bob Rae on 3 June 1999 and the appointment of Mr Edward C Chiasson QC as his replacement on 24 June 1999.