Company: FEAV
Filing Date: 2025-05-23
Form Type: S-3
Source: 0001193125-25-125840
Chunk: 8

Company: 5E Advanced Materials, Inc.
Filing Date: 2025-05-23
Form: S-3
Chunk 8
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 confidence of either an indicated mineral resource or an inferred mineral resource, a measured mineral resource may be converted to a proven mineral reserve or to a probable mineral reserve.                             |
| Indicated Mineral Resource                    
 (“Indicated” or “Indicated Mineral Resource”) |     | is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The level of geological certainty associated with an indicated mineral resource is                  
 sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit. Because an indicated mineral resource has a lower level of confidence than the 
 level of confidence of a measured mineral resource, an indicated mineral resource may only be converted to a probable mineral reserve.                                                                                                                  |

4

| Inferred Mineral Resource                   
 (“Inferred” or “Inferred Mineral Resource”) |     | is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The level of geological uncertainty associated with an inferred mineral resource is              
 too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability. Because an inferred mineral resource has the lowest level of geological 
 confidence of all mineral resources, which prevents the application of the modifying factors in a manner useful for evaluation of economic viability, an inferred mineral resource may not be considered when assessing the economic viability of a 
 mining project, and may not be converted to a mineral reserve.                                                                                                                                                                                      |
| Probable Mineral Reserve                    
 (“Probable” or “Probable Mineral Reserve”)  |     | is the economically mineable part of an indicated and, in some cases, a measured mineral resource.                                                                                                                                                  |
| Proven Mineral Reserve                      
 (“Proven” or “Proven Mineral Reserve”)      |     | is the economically mineable part of a measured mineral resource and can only result from conversion of a measured mineral resource.                                                                                                                |

The Company released an amended and restated technical report as an exhibit to Amendment No. 2 to its Annual Report on Form 10-K/Afiled with the SEC on February 2, 2024, which has a revised report date of February 2, 2024, a report date of May 11, 2023, and a report effective date of April 1, 2023 (the “Amended Initial Assessment Report”). The purpose of the Amended Initial Assessment Report is to support the