{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"2601439","name":"Clark Mine"},"operator":{"type":"operator","id":"0080925","name":"EP Minerals LLC"},"controller":{"type":"controller","id":"0101751","name":"EP Management Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09155","name":"Eagle Picher Filtration & Minerals Inc"},"object":{"type":"mine","id":"2601439","name":"Clark Mine"},"validFrom":"1950-01-01","validTo":"2006-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|L09155|1950-01-01|2006-07-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00245","name":"Eagle-Picher Industries Inc"},"object":{"type":"mine","id":"2601439","name":"Clark Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|M00245|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00245","name":"Eagle-Picher Industries Inc"},"object":{"type":"operator","id":"L09155","name":"Eagle Picher Filtration & Minerals Inc"},"validFrom":"1950-01-01","validTo":"2006-07-31","current":false,"derived":true,"evidenceMineId":"2601439","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|L09155|1950-01-01|M00245|1950-01-01|108099"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0080925","name":"EP Minerals LLC"},"object":{"type":"mine","id":"2601439","name":"Clark Mine"},"validFrom":"2006-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|0080925|2006-08-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00245","name":"Eagle-Picher Industries Inc"},"object":{"type":"mine","id":"2601439","name":"Clark Mine"},"validFrom":"2006-08-01","validTo":"2010-02-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|M00245|2006-08-01|2010-02-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00245","name":"Eagle-Picher Industries Inc"},"object":{"type":"operator","id":"0080925","name":"EP Minerals LLC"},"validFrom":"2006-08-01","validTo":"2010-02-14","current":false,"derived":true,"evidenceMineId":"2601439","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|0080925|2006-08-01|M00245|2006-08-01|108110"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0101751","name":"EP Management Corporation"},"object":{"type":"mine","id":"2601439","name":"Clark Mine"},"validFrom":"2010-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|0101751|2010-02-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0101751","name":"EP Management Corporation"},"object":{"type":"operator","id":"0080925","name":"EP Minerals LLC"},"validFrom":"2010-02-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"2601439","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2601439|0080925|2006-08-01|0101751|2010-02-15|17345"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2601439","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}