Lunar Geology Atlas, Edition 2

A 24-page evidence-graded atlas of lunar geology, polar volatile resources, and refinery feasibility. Every quantitative claim carries an evidence tier (1: arithmetic, 2: measured, 3: single experiment, 4: derived here, 5: assumption); a derived value is never graded higher than its weakest input.The atlas leads with the engineering constraints that bind lunar industry, then presents the geology as the reliable foundation it is, arguing an oxygen-first refinery architecture because it rests on tier-1 stoichiometry and tier-2 measurement whereas water-fed hydrolox rests on tier-3 and tier-4 evidence. Includes primary site selection (Mons Mouton primary, Nobile Rim 2 secondary) that persists across a 1–6% ice-grade sweep, a MILP site-selection model with tier-tagged coefficients, the hydrogen bottleneck with five evidence-ranked mitigations, and a Chang’e-7 candidate-site cross-reference identifying three sites of NASA/CNSA interest overlap.Deliberately contains no refinery timeline, cost per tonne of lunar propellant, or break-even year, because those would require tier-5 assumptions. Built exclusively from publicly released, distribution-unlimited sources: NASA NTRS, peer-reviewed journals, DLR, LPI abstracts, CAS papers, and agency reports cleared for public release.Package contents: the atlas PDF, README, KNOWN-GAPS, LICENSE, MANIFEST, MILP model (Python, two site-selection options with solve notes), four CSV datasets (refinery inputs, site candidates, program slip table, evidence tiers), full grouped bibliography, per-claim citation audit, and five supporting design briefs. v2.1 (2026-09-11): Reproducibility patch. Adds the previously missing model/refinery-inputs-routes.csv (referenced by the MILP scripts but omitted from v2.0), corrects an unfilled license placeholder in the top-level README, and updates the README's file-tree and version metadata to match. The LICENSE file itself was correct in v2.0 and is unchanged. All 30 other files in the archive — atlas PDF, KNOWN-GAPS, MANIFEST, all data CSVs, all MILP scripts, citations, and supporting briefs — are byte-identical to v2.0.