Facility Info
364
Mountain Pass Mine
10/17/07 Rec'd a change of owner applications for all the permits currently under Union Oil Molycorp. The change is going from Union Oil Molycorp to Chevron Mining, Inc. The company/facility numbers will be staying the same. (005/0364) Barbara Weese
08-08-2017 Moved Companies From Molycorp Minerals, LLC(5) to MP Mine Operations LLC(2349)
| Permit Number | Permit Description | Equipment Description | Issue Date | Expiration Date | Action | |
|---|---|---|---|---|---|---|
| C011626 | LEACH SCRUBBER | N/A | 02/10/2026 | 02/28/2027 |
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| C011634 | SXH/I TANK FARM SCRUBBER | N/A | 02/10/2026 | 02/28/2027 |
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| B012087 | HARD LEACH PROCESS | N/A | 02/10/2026 | 02/28/2027 |
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| C012086 | HARD LEACH VENTURI SCRUBBER | Venturi Scrubber and associated equipment. | 02/10/2026 | 02/28/2027 |
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| T012157 | STORAGE TANK, SODA ASH SYSTEM TANK #2 | 10,000 gallon capacity storage tank with pneumat... | 02/10/2026 | 02/28/2027 |
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| B013406 | BOILER, TEMPORARY MILL | Cleaver-Brooks Model CBLE700-600-250ST fire tube... | 02/02/2022 | 02/28/2023 |
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| C014185 | DUST COLLECTOR - PACKAGER | Manufacturer: Nordic Air Filtration Model: CD 3... | 02/10/2026 | 02/28/2027 |
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| B014167 | CONCENTRATE DRYER | N/A | 02/10/2026 | 02/28/2027 |
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| DCP000017 | DUST CONTROL PLAN (RULE 403(C)(8) MINING, STONE,... | a 2222 acre rare earth mine at Mountain Pass. F... | 02/10/2026 | 02/28/2027 |
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| B014168 | CONCENTRATE DRYING CONVEYANCE SYSTEM | N/A | 02/10/2026 | 02/28/2027 |
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| C014169 | BAGHOUSE - CONCENTRATE DRYING SYSTEM | Manufacturer: Sly Inc. Model: STJ-1311-10 Seria... | 02/10/2026 | 02/28/2027 |
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| C014178 | BIN VENT - PRODUCT COOLER CONVEYOR HOPPER | Manufacturer: Cyclonaire Model: DPV-25B Serial N... | 02/10/2026 | 02/28/2027 |
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| C014171 | BAGHOUSE - CONCENTRATE CALCINER SYSTEM | Manufacturer: Sly Inc. Model: STJ-1511-10 Seria... | 02/10/2026 | 02/28/2027 |
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| C014172 | LEACH RECEIVING FILTER RECEIVER | Manufacturer: Cyclonaire Model: 36-FR-54 Serial ... | 02/10/2026 | 02/28/2027 |
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| B014173 | LEACH CONVEYING SYSTEM | N/A | 02/10/2026 | 02/28/2027 |
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| C014184 | BIN VENT - CALCINED CONCENTRATE BIN | Manufacturer: Cyclonaire Model: 36-DC-36 Serial ... | 02/10/2026 | 02/28/2027 |
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| B014170 | CONCENTRATE CALCINING SYSTEM | N/A | 02/10/2026 | 02/28/2027 |
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| B014579 | DIATOMACEOUS EARTH LEAF FILTER PRE-COAT HOPPER | N/A | 02/10/2026 | 02/28/2027 |
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| C014580 | DUST COLLECTOR, DIATOMACEOUS EARTH LEAF FILTER P... | Manufacturer: Flexicon, Model: BD-S30T-X, Seria... | 02/10/2026 | 02/28/2027 |
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