MP Mine Operations LLC
Mountain Pass, CA · SAN BERNARDINO COUNTY · NAICS 212290
Data updated May 2026
According to the EPA Greenhouse Gas Reporting Program, MP Mine Operations LLC ranks #3,851 of 8,713 U.S. reporting facilities by latest reported CO₂e and #197 of 549 facilities in CA.
- National rank #3,851 of 8,713 GHGRP facilities
- #197 of 549 in CA
- #541 of 1,599 in Other
- 100% of MP MINE OPERATIONS parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +229.2% since 2012
MP Mine Operations LLC vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
58,720 3851st of 8713 higher than 4,862 of 8,713 facilities
GHGRP facilities, banded by latest reported CO₂e (MT)
Each bar is a band; taller bars hold more facilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · 2023
Facility footprint context
This site accounts for 100% of MP MINE OPERATIONS reported parent CO₂e (59K MT of 59K MT ). Inside the EPA Other sector it ranks #541 of 1,599 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 59K MT CO₂e reported for 2023, non-CO₂ gases are 0.1% , led by N₂O at 0.1% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.9%
- 59K MT
- CH₄
- 0%
- 28 MT
- N₂O
- 0.1%
- 33 MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 58,720 |
| 2022 | 45,078 |
| 2020 | 5,909 |
| 2019 | 4,055 |
| 2018 | 141 |
| 2017 | 9 |
| 2016 | 80 |
| 2015 | 62,680 |
| 2014 | 85,503 |
| 2013 | 49,127 |
| 2012 | 17,839 |
Facility insight: MP Mine Operations LLC
MP Mine Operations LLC (EPA GHGRP Facility ID 1010550) reported 59K metric tons of CO2-equivalent in 2023, operating in Mountain Pass, CA within SAN BERNARDINO COUNTY. Among GHGRP reporters it ranks #3,851 of 8,713 nationally by latest CO₂e and #197 of 549 in CA. The site is classified under Other with NAICS code 212290.
From 2012 to 2023, reported CO₂e rose 229.2% (peak 86K MT). GHGRP filings are on record for 11 of those 12 years, 1 year missing from the reporting history.
Peak year was 2014 at 86K MT CO2e; latest 2023 sits 31.3% below that peak (59K MT). The largest year-to-year move was 2015→2016 (-99.9%, 63K MT).
Frequently Asked Questions
Where does MP Mine Operations LLC rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, MP Mine Operations LLC ranks #3,851 of 8,713 reporting facilities by latest reported CO₂e, and #197 of 549 facilities in CA (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than MP Mine Operations LLC? ▼
MP Mine Operations LLC's 59K MT CO₂e is higher than 4,862 of the 8,713 GHGRP facilities with reported emissions (56%), an exact count from the full corpus, not an estimate.
How much CO2 does MP Mine Operations LLC emit? ▼
MP Mine Operations LLC reported 59K MT CO2e in 2023.
What share of MP MINE OPERATIONS does MP Mine Operations LLC represent? ▼
MP Mine Operations LLC accounts for 100% of MP MINE OPERATIONS's reported GHGRP CO₂e (59K MT of 59K MT).
What is MP Mine Operations LLC's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at MP Mine Operations LLC, with N₂O the larger non-CO₂ share at 0.1% (CO₂ 99.9%). Shares use the facility's GHGRP gas components for that year.
Where does MP Mine Operations LLC rank inside Other? ▼
Among EPA GHGRP facilities tagged Other, MP Mine Operations LLC ranks #541 of 1,599 by latest reported CO₂e.
Is MP Mine Operations LLC reducing emissions? ▼
Over 11 reporting years (2012–2023), MP Mine Operations LLC's emissions have increased by 229.2%. This may reflect expanded operations or increased production.
Nationwide facilities with similar CO₂e or sector
Two GHGRP-derived peer sets for MP Mine Operations LLC, both outside CA so the neighborhoods are not state-geo containment.
Similar reported CO₂e
Nearest latest-year facility totals outside CA (59K MT here).
Similar Other CO₂e
Nearest same-sector facility totals outside CA.