; and (2) a draft list of minerals, elements, substances, and materials that qualify as critical minerals. (b) Availability of data If available data is insufficient to provide a quantitative basis for the methodology developed under this section, qualitative evidence may be used to the extent necessary. (c) Final methodology and list After reviewing public comments on the draft methodology and the draft list of critical minerals published under subsection (a) and updating the methodology and list as appropriate, not later than 45 days after the date on which the public comment period with respect to the draft methodology and draft list closes, the Secretary shall publish in the Federal Register— (1) a description of the final methodology for determining which minerals, elements, substances, and materials qualify as critical minerals; and (2) the final list of critical minerals. (d) Designations (1) In general For purposes of carrying out this section, the Secretary shall maintain a list of minerals, elements, substances, and materials designated as critical, pursuant to the final methodology published under subsection (c), that the Secretary determines— (A) are essential to the economic or national security of the United States; (B) the supply chain of which is vulnerable to disruption (including restrictions associated with foreign political risk, abrupt demand growth, military conflict, violent unrest, anti-competitive or protectionist behaviors, and other risks throughout the supply chain)