Decision brief
DB-SA-045 · 280428Z OCT 2026
Economic · Critical Minerals
Mountain Pass mill fire cuts domestic heavy rare earth feed
- Affected site
- —
- Severity
- critical
- Report confidence
- Medium
- Reported via
- Field office incident reportReport
01Bottom line
Simulating the disruption…
02What happened
A fire in the Mountain Pass concentrator has suspended mine output, leaving the co-located refinery and separation circuit without feed and removing the only domestic source of contained Dy/Tb.
Reported via Field office incident report (report), report confidence medium. This is the report as received; nothing below it verifies the event itself.
03Why it matters
How much of the system this touches, and what depends on the element.
Resolving end-use exposure…
04What is at risk
The plants that lose feed if the site stays down.
Simulating the disruption…
05Recommended alternatives
Sources that could be rerouted to the affected plants.
Simulating the disruption…
06Limits of this assessment
What the figures above cannot support. Read before acting on them.
Simulating the disruption…
07Sources
- RField office incident reportReport · the report this alert was raised fromReport confidence medium
No end-use documents are cited, because no end-use layer was loaded for this alert.
Numbered documents stand behind the end-use claims in section 3, graded for the reliability of the document itself. Supply relationships and tonnages are cited per site in Monitor, under each asset’s reference detail.