From Core Exiles Wiki
Extractors are used to pull resources from the ground on ORSA sites. The extractors them selves are extremely varied coming in all sizes and types. Almost all can be player crafted whilst some are available from in game vendor stores.
- Note that each Extractor placed uses Structure Points. This limits the number of Extractors you can place.
- When a resource is depleted, you must remove your extractor before the end of the final day. Otherwise, the contents of the extractor are confiscated and the extractor is placed in local storage. If you do not collect the extractor within 7 days, then it is deleted from the local storage.