Rare earth resource upgrades 2026: 30% variance threshold, infill or defer

For 2026 rare earth resource upgrades, blocks with block-scale relative variance above 30% on reportable block support must be deferred or require infill drilling. Independent technical note mirroring the canonical version: https://skymineral.com/blog/rare-earth-resource-upgrades-2026-30-variance-threshold-infill-or-defer.php

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-09
DOI
https://doi.org/10.5281/zenodo.24079871
Primary Topic
Mining Techniques and Economics
Type
preprint
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preprint

Rare earth resource upgrades 2026: 30% variance threshold, infill or defer

Tanner Briggs
Zenodo (CERN European Organization for Nuclear Research)
Mining Techniques and Economics
preprint

Rare earth resource upgrades 2026: 30% variance threshold, infill or defer

Tanner Briggs
preprint en

Abstract

For 2026 rare earth resource upgrades, blocks with block-scale relative variance above 30% on reportable block support must be deferred or require infill drilling. Independent technical note mirroring the canonical version: https://skymineral.com/blog/rare-earth-resource-upgrades-2026-30-variance-threshold-infill-or-defer.php

Zenodo (CERN European Organization for Nuclear Research)
Mining Techniques and Economics
DOIOpen Access PDFOpenAlex
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Rare earth resource upgrades 2026: 30% variance threshold, infill or defer — Tanner Briggs · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS