paragraph by which the contractor was encouraged, to the extent possible and reasonable, to use materials, contractor's equipment, plant and supplies from sources within the country of the Employer as stipulated in the Appendix to the Bid. When the said amendment to Clause 36.1 was incorporated in CoPA, it was noticed that the said change would necessitate change in foreign currency requirements during the execution of the work. However, Clauses 72.1, 72.2 and 72.3 of the standard FIDIC Conditions dealing with foreign currency, did not contemplate any change in the foreign currency requirement during the execution of the work. Therefore, the Employer introduced a new Sub-Clause, that is, 72.4 in CoPA, as per which, the foreign and local currency portion of the balance of the contract price was required to be amended by an agreement between the Employer and the Contractor to reflect any substantial change in the expected foreign and local currency requirements of the contractor during the execution of works, provided the contractor informed the Employer and Engineer whenever any such substantial change occurred or the Engineer could recommend a review of such expected requirement if in his judgment, there is evidence of a change in the country of origin of materials, plant, or
