Othergravity 5
Citation #0100129 CFR 2340.21(a)(2)View full regulation text on OSHA.govInitial$300
→
Current$300
OSHA Inspection
Mp Mine Operations Llc — OSHA Inspection #344391610
MOUNTAIN PASS, California · NAICS 212399 · 175 workers on site
Inspection outcome
Opened: October 8, 2019 · Closed: February 3, 2020
○
Citations issued
OSHA issued one or more Other-than-serious citations.
Safety inspection · Planned (Programmed) · Comprehensive — entire establishment
Violations11
Serious+0
Initial penalty$3,000
Current penalty$3,000
Accidents0
Duration118d
Summary
What happened in this inspection
On October 8, 2019, OSHA opened Mp Mine Operations Llc’s inspection #344391610 at MOUNTAIN PASS, California. The case was administratively closed on February 3, 2020, 118 days after opening.
OSHA cited the employer for 11 violations totaling $3,000 in current penalties. All citations were Other-than-serious.
Breakdown by classification
11violations total
Other-than-serious11100%
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 5
Citation #0100229 CFR 2473.1(b)View full regulation text on OSHA.govInitial$300
→
Current$300
Othergravity 1
Citation #010033212(A)(2)(A)General Duty Clause or unstructured citationInitial$200
→
Current$200
Othergravity 1
Citation #010043366(D)General Duty Clause or unstructured citationInitial$200
→
Current$200
Othergravity 5
Citation #010057055(B)General Duty Clause or unstructured citationInitial$300
→
Current$300
Othergravity 1
Citation #010065048(J)General Duty Clause or unstructured citationInitial$200
→
Current$200
Othergravity 5
Citation #010075048(I)(5)General Duty Clause or unstructured citationInitial$300
→
Current$300
Othergravity 5
Citation #010085417(E)General Duty Clause or unstructured citationInitial$300
→
Current$300
Othergravity 5
Citation #010095162(A)General Duty Clause or unstructured citationInitial$450
→
Current$450
Othergravity 5
Citation #010103203(B)(2)General Duty Clause or unstructured citationInitial$450
→
Current$450
Other
Citation #0101129 CFR 2340.26View full regulation text on OSHA.govInitial$0
→
Current$0
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 344391610 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.
Citation issuedSep 8, 2025
Safety inspection#348502196
18violations
Penalty assessed$10,520
Citation issuedApr 13, 2021
Safety inspection#345257034
2violations
Penalty assessed$400
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 344391610 directly:
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