Other
Citation #010013203(B)(1)General Duty Clause or unstructured citationInitial$375
→
Current$375
OSHA Inspection
Mp Mine Operations Llc — OSHA Inspection #348502196
MOUNTAIN PASS, California · NAICS 212399 · 600 workers on site
Inspection outcome
Opened: September 8, 2025 · Status: Open
○
Citations issued
OSHA issued one or more Other-than-serious citations.
Safety inspection · Planned (Programmed) · Comprehensive — entire establishment
Violations18
Serious+0
Initial penalty$10,520
Current penalty$10,520
Accidents0
Duration—
Summary
What happened in this inspection
On September 8, 2025, OSHA opened Mp Mine Operations Llc’s inspection #348502196 at MOUNTAIN PASS, California. The case remains open or the close date has not yet been published.
OSHA cited the employer for 18 violations totaling $10,520 in current penalties. All citations were Other-than-serious.
Breakdown by classification
18violations total
Serious16%
A Serious violation is one where there is substantial probability that death or serious physical harm could result, and the employer knew (or should have known) of the hazard. Maximum penalty is ~$16,550 per violation. The majority of OSHA citations fall into this category.
Other-than-serious1794%
An Other-than-serious violation has a direct relationship to job safety and health but probably would not cause death or serious physical harm. Maximum penalty is ~$16,550 per violation. Often involves recordkeeping or procedural lapses.
Citations
Citations issued in this inspection
Othergravity 1
Citation #0100229 CFR 2340.16(c)View full regulation text on OSHA.govInitial$185
→
Current$185
Othergravity 5
Citation #0100329 CFR 2340.22(a)View full regulation text on OSHA.govInitial$280
→
Current$280
Othergravity 5
Citation #0100429 CFR 2473.1(b)View full regulation text on OSHA.govInitial$420
→
Current$420
Othergravity 5
Citation #010053241(C)General Duty Clause or unstructured citationInitial$420
→
Current$420
Othergravity 5
Citation #010063270(B)General Duty Clause or unstructured citationInitial$420
→
Current$420
Othergravity 5
Citation #010073272(C)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010083328(A)(2)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010093943(C)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010104002(A)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010114650(D)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010124650(E)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010135143(A)(5)General Duty Clause or unstructured citationInitial$420
→
Current$420
Othergravity 5
Citation #010145164(C)General Duty Clause or unstructured citationInitial$420
→
Current$420
Othergravity 5
Citation #010155194(F)(6)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010167014(F)General Duty Clause or unstructured citationInitial$280
→
Current$280
Othergravity 5
Citation #010177055(B)General Duty Clause or unstructured citationInitial$280
→
Current$280
Seriousgravity 10
Citation #020013210(B)General Duty Clause or unstructured citationInitial$5,060
→
Current$5,060
Standard codes link to the regulation text on OSHA.gov. The text describes the rule itself; the specific findings of this inspection appear above. To see OSHA’s official record of this inspection, search activity number 348502196 at OSHA Establishment Search.
Same employer
Other OSHA inspections at Mp Mine Operations Llc
Earlier or related cases at this establishment.
AccidentApr 15, 2026
Safety inspection#348885211
1accident
Accident-triggered inspection — OSHA opened this case in response to a reported workplace incident.
AccidentFeb 20, 2026
Safety inspection#348791922
1accident
Accident-triggered inspection — OSHA opened this case in response to a reported workplace incident.
AccidentDec 16, 2025
Safety inspection#348646001
1accident
Accident-triggered inspection — OSHA opened this case in response to a reported workplace incident.
No violationsApr 13, 2021
Safety inspection#345257034
Closed Dec 29 — no citations.
No violationsOct 8, 2019
Safety inspection#344391610
Closed Feb 3 — no citations.
No violationsNov 20, 2018
Safety inspection#343611885
Closed Dec 10 — no citations.
Reference
About OSHA inspections
The U.S. Occupational Safety and Health Administration (OSHA) conducts inspections under several triggers: programmed targeting of high-hazard industries, employee complaints, workplace accidents, fatalities, and follow-ups to prior citations.
Citations
Each citation specifies a section of 29 CFR, a severity tier, and a proposed penalty. Employers can contest citations through OSHA’s informal conference or before the OSH Review Commission.
Open vs closed
An open case has not yet been administratively closed — citations may follow or the case may close without action.
Current vs initial penalty
Initial penalty is the proposed amount at citation. Current penalty is the post-conference / settlement figure on file today.
Trigger types
A = Accident, B = Complaint, H = Programmed, F = Follow-up. See the glossary for all codes.
About this inspection
OSHA classified this as Planned (Programmed) — a programmed (planned) inspection, typically targeting high-hazard industries.
Sources
Cross-check with OSHA directly
This page draws from the OSHA Integrated Management Information System (IMIS) via the DOL Open Data Portal. For the authoritative record, look up activity number 348502196 directly:
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