Annex 1. Muscat - Abu Dhabi As Your Highness knows, this frontier was investigated and settled by Mr. Walker in 1959, with the exception of the last four miles or so from Naga Zahar to Umm al Zamul. Your Highness will recall that, as a result of my investigations in 1964, it was agreed that the frontier should continue in a direct line towards Umm Al Zamul but that the vicinity of this well be regarded as a neutral zone, tne extent of which was defined as one square mile centred on the main (i.e. eastern) well. The whole line from Umm al Zamul northwards to Al Uqaidat was then carefully surveyed by the Royal Engineers (13th Field Survey Regiment), and, as a result of their work, this line was accurately plotted on air photographs and maps. Your Highness has already received copies of these air photographs. The printing of all the relevant maps has not yet been completed, but I shall do my best to ensure that copies of them reach you as soon as they are ready for distribution. In the course of my investigation of this line with the Royal Engineers, it became apparent that the description of the frontier in the agreement signed by Your Highness and Shaikh Shakhbut bin Sultan on 21 May, 1959, was inaccurate and inadequate in places. To remedy this, and to obviate, as far as possible, any ambiguities of interpretation, I have prepared a fuller description of this frontier, a copy of which I have the honour to attach as Appendix A to this Annex. I must emphasise that this is in no sense a new agreement. It merely serves to expand and clarify, where necessary, the original document, incorporating compass bearings and other technical data supplied by the Royal Engineers, and to correct the errors in it. In addition to this survey, I undertook, with the agreement of Your Highness and Shaikh Shakhbut bin Sultan, the former Ruler of Abu Dhabi, to mark on the ground the frontier in the Buraimi area. These markers, which consist of metal posts in a concrete base, start at Qurn Awyan, approximately 15 miles north of Sa'arah, and continue to Sha'ab al Ghaf on the western side of the Jebel Hafit. As Your Highness knows, this operation proved more difficult and lengthy than had been anticipated, certain points on the frontier being disputed by one of the two parties concerned. Some of these disputes were resolved, as at Tawi Awaina, by slight modifications of the original line, which are incorporated in the revised description. Others continue to give rise, from time to time, to minor com plaints. At the request of Your Highness, I have the honour to attach, at Appendix B to this Annex, a list of the points still disputed and my views on these disputes.
