articles, materials, or supplies are to be acquired for use outside the United States and are not needed on an urgent basis or are acquired on a regular basis, before entering into a contract, an analysis shall be made of the difference in the cost of acquiring such articles, materials, or supplies from a company mining, producing, or manufacturing the articles, materials, or supplies in the United States (excluding the cost of shipping) and the cost of acquiring such articles, materials, or supplies from a company mining, producing, or manufacturing the articles, materials, or supplies outside the United States (including the cost of shipping). (3) Domestic availability The head of a Federal agency may not determine that an article, material, or supply is not mined, produced, or manufactured in the United States in sufficient and reasonably available commercial quantities and of a satisfactory quality under subsection (a)(1) unless the head of the agency first determines that— (A) domestic production cannot be initiated without significantly delaying the project for which the article, material, or supply is to be acquired