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Explore the evidence behind each disclosure assessment.

Method 0.4 · Release 11 · deployed September 13, 2026, 00:07 UTC (September 12, 8:07 p.m. ET)
Dataset last updated: September 12, 2026

128company-mineral profiles
58organizations
60 / 60critical minerals · USGS 2025 list
12full tantalum and tungsten assessments
12upstream relationship records
● A 6● B 4○ Unrated 117⚑ Review hold 1

Named companies have not endorsed or participated in this research.

Tantalum and tungsten assessment table
Tantalum and tungsten disclosure assessments · research date 2026-09-12
OrganizationMineralRoleScoreBandCoverageConfidence
Cisco SystemsTantalumElectronics92● A100%Moderate
Cisco SystemsTungstenElectronics92● A100%Moderate
HP Inc.TantalumElectronics92● A100%Moderate
HP Inc.TungstenElectronics92● A100%Moderate
Dell TechnologiesTantalumElectronics83● B100%Moderate
Dell TechnologiesTungstenElectronics83● B100%Moderate
Vishay IntertechnologyTantalumComponents92● A100%Moderate
Vishay IntertechnologyTungstenComponents92● A100%Moderate
Global Advanced MetalsTantalumUpstream83● B100%Moderate
TANIOBIS GmbHTantalumUpstreamWithheld○ Unrated83%Limited
Source undated
KennametalTungstenUpstream75● B100%Moderate
H.C. Starck TungstenTungstenUpstreamWithheld○ Unrated67%Limited
Source undated
Coverage below 80%

Explore all company-mineral profiles

2 of 128 profiles

Published company-mineral profiles · research date 2026-09-12
OrganizationMineralRoleScoreBandCoverageConfidence
American Elements
DysprosiumMaterials supplierNot scored○ UnratedNot yet assessedLimited
Source undated
AEM REE
DysprosiumMaterials supplierNot scored○ UnratedNot yet assessedLimited
Source undated

CMMS-BS assesses what public sourcing disclosures establish. It is not a certification, an audit or legal advice.

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