SEC
QP-signed Mineral Resource/Reserve estimates (tonnage + grade) from registrant TRS filings, FY2021+
Source
Feed (what to expect)
Annual 10-K cycle via free EDGAR full-text search (no auth); live-fetched.
Quirks
Universe-wide HTML discovery across SEC mining registrants; emits DepositResource (reserves + grade) and DepositEconomic (NPV/opex/mine-life). Latest-effective TRS kept per property (cross-vintage supersession). PDF + image-rendered (Workiva) TRS detected and deferred to an OCR/LLM wave.
Reconciliation
Schema
Feeds (axes)
Record kinds
Identifier schemes