0407. As soon as it is apparent that, the dates of delivery cannot be adhered to, the Supplier shall send an application for extension of delivery period to the Purchaser. If failure to deliver within scheduled time as aforesaid shall have arisen from any cause which BN may admit as a reasonable ground for the extension of delivery period, the Purchaser may allow such additional time as he considers to be justified without imposing liquidated damages. If the delay is considered by the Purchaser due to reasons within the Supplier’s control, the extension may be granted with liquidated damages. The decision of the Purchaser on the issue shall be considered as final.