Yale CIE (Graedel et al.)
102 materials (Cu, Ni, Co, REE, etc.); anthropogenic stocks + flows from early
Source
Feed (what to expect)
Free ScienceBase CSV bundle, vendored; frozen 2019 release, no successors planned.
Quirks
Cache-only; USGS ScienceBase CDN requires embedded hash; operator workflow
Reconciliation
Schema
Feeds (axes)
Record kinds
Identifier schemes
