; and (2) important in use (including energy technology-, defense-, currency-, agriculture-, consumer electronics-, and health care-related applications). (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 After reviewing public comments on the draft methodology under subsection (a) and updating the draft methodology as appropriate, not later than 270 days after the date of enactment of this Act, the Secretary shall publish in the Federal Register a description of the final methodology for determining which minerals qualify as critical minerals. (d) Designations (1) In general For purposes of carrying out this subtitle, the Secretary shall maintain a list of minerals and elements designated as critical, pursuant to the methodology under subsection (c). (2) Initial list Subject to paragraph (1), not later than 1 year after the date of enactment of this Act, the Secretary shall publish in the Federal Register an initial list of minerals designated as critical pursuant to the final methodology under subsection (c) for the purpose of carrying out this subtitle. (3) Inclusions Notwithstanding the criteria under subsection (c), the Secretary may designate and include on the list any mineral or element determined by another Federal agency to be strategic and critical to the defense or national security of the United States. (e) Subsequent review (1) In general The Secretary shall review the methodology and designations under subsections (c) and (d) at least every 3 years, or more frequently as the Secretary considers to be appropriate. (2) Revisions Subject to subsection (d)(1), the Secretary may— (A) revise the methodology described in this section; (B) determine that minerals or elements previously determined to be critical minerals are no longer critical minerals