GCAD-Global v1.2 and Nature flagship analysis package: inverting the institutional filter of the global industrial chemical accident record (1970-2025)

Version v1.3: Nature flagship submission package (revision 5). Harmonised multi-source corpus of 525,632 chemical-accident records (ARIA/BARPI France; NRC/USCG USA; eMARS EU; GDELT and MEM-CN exploratory audit layers) with severity tiering, cross-source entity resolution and event-level adjudication. New in v1.3: capture-recapture assumption audit (T5c); francophone-exclusion language control (T36); matched-window severity reconciliation (T30b); Extended Data Figs. 9-10 generators; detection-model sign-reconciliation note (SI section 3A); 68 analysis tables (T1-T36 series); full Nature submission package (manuscript with anchor-conditional dark-figure accounting, cover letter, 5 main figures, 10 Extended Data figures, Supplementary Information, Reporting Summary); full Python pipeline (81 scripts).