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Establishment profile

MP MINE OPERATIONS LLC

67750 BAILEY ROAD HC1, MOUNTAIN PASS, CA, 92366
Operated by MP Materials Corp. / DE
212399All Other Nonmetallic Mineral Mining

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OSHA inspections
8
over 7 years
Violations
34
$14,820 in penalties
Penalties
$14,820
$436 avg
Violations across 2 federal agencies
Enforcement actions from multiple agencies may indicate systemic compliance issues across functions.
Accident investigations on record
1 OSHA follow-up

Summary

MP MINE OPERATIONS LLC has accumulated 34 OSHA violations across 8 inspections over 7 years of recorded history, with $14,820 in total assessed penalties.

The establishment sits in the 99th percentile for violations within its industry-state peer group of 1,680 employers. Inspection frequency runs at the 82nd percentile. The most recent enforcement activity was recorded 2 months ago.

Federal records were found in 2 of 15 sources. Sources without matching records returned empty for this establishment.

Agency coverage

MP MINE OPERATIONS LLC appears in OSHA workplace safety, MSHA mine safety, and FMCSA motor carrier registration records only. No matching records were found in WHD wage enforcement, EPA environmental compliance, NLRB labor relations, OFLC visa and labor certification (historical), SAM.gov federal debarment, CMS nursing home enforcement, UVA Corporate Prosecution Registry, CPSC product recalls, or NHTSA vehicle recalls.

OSHA workplace safety

Inspections
8
1.1 / yr · last 7 yrs
Violations
34
4.9 / yr
Penalties
$14,820
$436 avg / violation
3% serious97% other
Inspection trigger · planned
4 of 8
Inspection trigger · accident
3 of 8

50% of inspections at this establishment produced violations,

Most-cited OSHA standards

Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 20 distinct standards shown · 23 citations in this view · $12,625 in penalties.

CFR sectionCitationsInspectionsTotal penaltyFirst citedLast cited
5162(A)22$900Aug 2018Jan 2020
29 CFR 2473.0001 B22$720Jan 2020Feb 2026
7055(B)22$580Jan 2020Feb 2026
3210(B)11$5,060Feb 2026Feb 2026
3203(B)(2)11$450Jan 2020Jan 2020
5164(C)11$420Feb 2026Feb 2026
5143(A)(5)11$420Feb 2026Feb 2026
3241(C)11$420Feb 2026Feb 2026
3270(B)11$420Feb 2026Feb 2026
3203(B)(1)11$375Feb 2026Feb 2026
29 CFR 2340.0021 A0211$300Jan 2020Jan 2020
5048(I)(5)11$300Jan 2020Jan 2020
5417(E)11$300Jan 2020Jan 2020
3943(C)11$280Feb 2026Feb 2026
29 CFR 2340.0022 A11$280Feb 2026Feb 2026
3272(C)11$280Feb 2026Feb 2026
3328(A)(2)11$280Feb 2026Feb 2026
4002(A)11$280Feb 2026Feb 2026
4650(D)11$280Feb 2026Feb 2026
4650(E)11$280Feb 2026Feb 2026

Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.

Peer comparison

99th

Worse on violations than nearly every other employer in NAICS 2123 within CA. Peer group: 1,680 employers. This establishment has 34 OSHA violations; peer median is 2.

Fewer violationsMore violations
Penalty percentile
95th
peer median: $300
Inspection frequency
82nd
peer median: 2

Safety self-report (OSHA 300A)

No self-reported injury rates filed with OSHA's Injury Tracking Application for MP MINE OPERATIONS LLC. Verify directly with OSHA Injury Tracking Application

Industry benchmark

Industry avg TRIR
1.5
BLS SOII 2024
Industry avg DART
1.1
BLS SOII 2024
Self-reported TRIR
Not in OSHA ITA

BLS rates reflect industry-wide averages. Self-reported figures come from OSHA’s Injury Tracking Application; absence of self-reported data does not necessarily indicate non-compliance — many establishments fall below the ITA reporting threshold.

Inspection breakdown

Planned
4
Complaint
1
Accident
3

Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.

OSHA severe injury reports

No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for MP MINE OPERATIONS LLC. Verify directly with Occupational Safety and Health Administration

Activity timeline

Data refreshed
Weekly
First OSHA inspection
Most recent activity
2 months ago

Most recent federal enforcement activity recorded 2 months ago. Data on this page is refreshed weekly.

Wage & Hour Division (WHD)

No WHD wage, overtime, or child-labor enforcement cases on file for MP MINE OPERATIONS LLC. Verify directly with Wage and Hour Division

Mine safety (MSHA)

Company-level in CA — for MP Materials Corp. / DE, not this location alone

Violations
277
Assessed penalties
$196,845

Mine Safety & Health Administration — citations issued at mining operations. MSHA records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other MP Materials Corp. / DE operations in the same state.

MSHA citations

Mine Safety and Health Administration citations. S&S (significant and substantial) marks violations that could reasonably contribute to a serious injury. Negligence rating is MSHA’s operator-culpability assessment (none, low, moderate, high, or reckless disregard). Proposed = assessed at issuance; Paid = post-settlement / appeal. 100 citations · 40S&S · $168,883 proposed / $153,115 paid.

CitationMineDateSectionS&SNegligenceProposedPaid
9430494
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019YesHighNegligence$16,059$16,059
5103236
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026YesHighNegligence$15,768
5103558
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026YesModNegligence$13,782$13,782
9686931
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025YesHighNegligence$12,403$12,403
5103235
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026YesHighNegligence$7,084$7,084
9501317
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019YesModNegligence$6,832$6,832
9430215
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2018YesHighNegligence$6,664$6,664
9680131
Mt Pass Mine & Mill
San Bernardino, CA
May 2025YesModNegligence$6,540$6,540
8996528
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2020YesHighNegligence$4,922$4,922
5103551
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2025YesModNegligence$4,749$4,749
9999400
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025YesModNegligence$4,383$4,383
9686243
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023YesHighNegligence$2,644$2,644
5103474
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026YesModNegligence$2,503$2,503
9686232
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023YesHighNegligence$2,253$2,253
5103234
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026YesModNegligence$2,133$2,133
5103232
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoHighNegligence$2,133$2,133
9680129
Mt Pass Mine & Mill
San Bernardino, CA
May 2025YesModNegligence$1,968$1,968
8912559
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2024YesLowNegligence$1,819$1,819
5103549
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$1,818$1,818
9686081
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023YesModNegligence$1,773$1,773
8996523
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2020YesHighNegligence$1,483$1,483
9501314
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019YesModNegligence$1,457$1,457
9501311
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019YesModNegligence$1,457$1,457
5103231
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoHighNegligence$1,431$1,431
5103230
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoHighNegligence$1,431$1,431
8694633
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2023YesModNegligence$1,350$1,350
9614807
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2023YesModNegligence$1,350$1,350
9686681
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025YesModNegligence$1,320$1,320
9999396
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025YesModNegligence$1,320$1,320
9614150
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2023YesModNegligence$1,246$1,246
9680164
Mt Pass Mine & Mill
San Bernardino, CA
Jun 2025YesModNegligence$1,126$1,126
9501316
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$977$977
9501315
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$977$977
9430493
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$977$977
9431770
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$977$977
9686932
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025YesModNegligence$959$959
9680103
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025NoModNegligence$883$883
9999398
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025NoModNegligence$883$883
9430220
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2018YesHighNegligence$880$880
9614297
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2021YesModNegligence$791$791
9430765
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2020YesLowNegligence$782$782
9430764
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2020YesModNegligence$782$782
9686930
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025NoModNegligence$755$755
9680162
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025NoModNegligence$755$755
9680663
Mt Pass Mine & Mill
San Bernardino, CA
Jun 2025NoModNegligence$755$755
9680161
Mt Pass Mine & Mill
San Bernardino, CA
Jun 2025NoHighNegligence$755$755
9686070
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023YesModNegligence$679$679
9686765
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025NoModNegligence$642$642
9614993
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2024NoModNegligence$626$626
9430395
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2020YesModNegligence$615$615
9430496
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$604$604
9680130
Mt Pass Mine & Mill
San Bernardino, CA
May 2025NoLowNegligence$592$592
9430226
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2018NoHighNegligence$589$589
9374608
Mt Pass Mine & Mill
San Bernardino, CA
Feb 2018YesHighNegligence$589$589
9686761
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025YesLowNegligence$561$561
5103550
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$549$549
5103548
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$549$549
5103547
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$549$549
5103229
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$549$549
9999213
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2024NoModNegligence$535$535
9686234
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoModNegligence$453$453
9686231
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoModNegligence$453$453
9686230
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoModNegligence$453$453
5103553
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$432$432
5103552
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$432$432
5103233
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$432$432
8566337
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2024NoModNegligence$421$421
9430396
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2020NoModNegligence$412$412
9614804
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2023YesModNegligence$407$407
9686689
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2025NoModNegligence$398$398
9430225
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2018YesLowNegligence$395$395
9374699
Mt Pass Mine & Mill
San Bernardino, CA
May 2018YesHighNegligence$395$395
9532982
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2022NoModNegligence$378$378
9686928
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025NoLowNegligence$374$374
9430222
Mt Pass Mine & Mill
San Bernardino, CA
Nov 2018NoHighNegligence$374$374
9890037
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2024NoLowNegligence$365$365
9686238
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoModNegligence$357$357
9686078
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoHighNegligence$357$357
9686076
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoHighNegligence$357$357
9686075
Mt Pass Mine & Mill
San Bernardino, CA
Dec 2023NoHighNegligence$357$357
3915833
Mt Pass Mine & Mill
San Bernardino, CA
Oct 2023NoModNegligence$357$357
3915832
Mt Pass Mine & Mill
San Bernardino, CA
Oct 2023NoModNegligence$357$357
8870461
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2021NoModNegligence$355$355
8870460
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2021NoModNegligence$355$355
8694612
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2023NoModNegligence$346$346
5103556
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$336$336
5103555
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$336$336
5103554
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$336$336
5103475
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$336$336
5103473
Mt Pass Mine & Mill
San Bernardino, CA
Jan 2026NoModNegligence$336$336
9686760
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2025NoModNegligence$336$336
9686759
Mt Pass Mine & Mill
San Bernardino, CA
Jun 2025NoModNegligence$336$336
9680665
Mt Pass Mine & Mill
San Bernardino, CA
Jun 2025NoLowNegligence$336$336
9890036
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2024NoLowNegligence$328$328
8989936
Mt Pass Mine & Mill
San Bernardino, CA
Apr 2021NoModNegligence$302$302
8996526
Mt Pass Mine & Mill
San Bernardino, CA
Jul 2020NoModNegligence$298$298
9532989
Mt Pass Mine & Mill
San Bernardino, CA
Aug 2022NoModNegligence$296$296
9506894
Mt Pass Mine & Mill
San Bernardino, CA
Mar 2022YesLowNegligence$296$296
9501318
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$293$293
9501313
Mt Pass Mine & Mill
San Bernardino, CA
Sep 2019NoModNegligence$293$293

Source: MSHA citation database. “Contractor” annotations indicate the cited party was on-site at the mine but not the mine’s operator -- responsibility attaches to the contractor LLC, not the mine’s owner. Section codes reference 30 CFR (the Mine Safety and Health regulations).

Labor relations (NLRB)

No NLRB unfair labor practice charges or union representation cases on file for MP MINE OPERATIONS LLC. Verify directly with National Labor Relations Board

Visa & labor certification (OFLC) — historical

No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for MP MINE OPERATIONS LLC. Verify directly with Office of Foreign Labor Certification

Environmental compliance (EPA)

No EPA inspections or formal enforcement actions on file for MP MINE OPERATIONS LLC. Verify directly with Environmental Protection Agency

Motor carrier safety (FMCSA)

DOT number
3619533
Operation
C

Federal Motor Carrier Safety Administration — DOT-regulated carrier registration and fleet data.

Federal criminal prosecution record

No federal criminal prosecutions, plea agreements, or deferred-prosecution agreements on file for MP MINE OPERATIONS LLC. Verify directly with UVA Corporate Prosecution Registry

Federal contracts

This location

Obligated (5-yr)
$13.3M
Obligated (all-time)
$16.5M
Awards
3
Top agency
Department of Defense
$13.3M
Company-wide — MP MATERIALS CORP. (across 1 entity)
Obligated (5-yr)
$13.3M
Obligated (all-time)
$13.3M
Awards (all-time)
2

Consolidated across all USAspending recipient entities under this corporate parent — not attributable to this single location.

Top agencies by obligation (this location)
Department of Defense$13.3M
Department of Energy$3.1M
Largest awards
  • Department of Defense
    NEODYMIUM OXIDE (ND2O3) AND PRASEODYMIUM OXIDE (PR6O11)
    contract · Last action 2025-10-10
    $10,986,003
  • Department of Energy
    PRODUCTION OF MIXED RARE EARTH OXIDES (REOS) FROM COAL-BASED RESOURCES
    contract · Last action 2021-04-22
    $3,131,518
  • Department of Defense
    8509870941!LANTHANUM STORAGE & ROTATION
    contract · Last action 2025-09-29
    $2,360,972

Federal contract dollars to this establishment. Primary NAICS: 325180 - OTHER BASIC INORGANIC CHEMICAL MANUFACTURING. Last action: 2025-10-10. Source: USAspending.gov, net obligations. Recipient address is the SAM registration / HQ address, not necessarily the worksite.

Inspection history

DateTriggerViolationsSeriousPenalty
2026-04-15Accident0$0
2026-02-20Accident0$0
2025-12-16Accident0$0
2025-09-08Planned181$10,520
2021-04-13Planned2$400
2019-10-08Planned11$3,000
2018-11-20Complaint0$0
2018-08-14Planned3$900

Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.

In the news

Part of a larger organization

MP MINE OPERATIONS LLC is one of 1 establishments rolled up under the parent organization MP Materials Corp. / DE.

Federal enforcement records on this page represent activity at this specific establishment only. The full enforcement footprint of MP Materials Corp. / DE across all 1 of its tracked locations is viewable on the parent profile.

Other employers in this industry and state

Other employers in all other nonmetallic mineral mining within CA, ordered by federal enforcement volume:

Related searches

About this data

This profile aggregates federal enforcement records on MP MINE OPERATIONS LLC from every major federal compliance and enforcement source plus the UVA Corporate Prosecution Registry. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.

Establishments are matched across agencies using normalized employer name, state, and ZIP code. This establishment resolves to the parent rollup MP Materials Corp. / DE.

OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.

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Frequently asked

What is MP MINE OPERATIONS LLC's OSHA violation history?
MP MINE OPERATIONS LLC has 8 OSHA inspections on record with 34 violations and $14,820 in total penalties.
How does MP MINE OPERATIONS LLC's safety record compare to its industry?
MP MINE OPERATIONS LLC operates in the all other nonmetallic mineral mining industry. The industry average Total Recordable Incident Rate (TRIR) is 1.5.