USGS
764 above-ground mine-waste features (tailings/dumps/leach piles) across 11 US states; commodity, feature type, volume + a reported grade & contained-commodity for a subset; 2,167 secondary DepositResource (feature x commodity)
Source
Feed (what to expect)
Static v1 File-GDB (free ScienceBase); vendored, re-pull as states expand.
Quirks
The circular-economy / mine-waste secondary-supply signal the primary deposit sources lack; flows into the deposit atlas labelled Mine waste.
Reconciliation
Schema
Feeds (axes)
Record kinds
Identifier schemes