{"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":"2402454","name":"Crusher #2"},"operator":{"type":"operator","id":"L16825","name":"Remp Sand & Gravel Inc"},"controller":{"type":"controller","id":"0141461","name":"Kathleen K Remp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12850","name":"Ronald  Remp et al"},"object":{"type":"mine","id":"2402454","name":"Crusher #2"},"validFrom":"1999-08-02","validTo":"2018-06-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|M12850|1999-08-02|2018-06-12"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16825","name":"Remp Sand & Gravel Inc"},"object":{"type":"mine","id":"2402454","name":"Crusher #2"},"validFrom":"2006-06-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|L16825|2006-06-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12850","name":"Ronald  Remp et al"},"object":{"type":"operator","id":"L16825","name":"Remp Sand & Gravel Inc"},"validFrom":"2006-06-22","validTo":"2018-06-12","current":false,"derived":true,"evidenceMineId":"2402454","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|L16825|2006-06-22|M12850|1999-08-02|154785"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12850","name":"Russell  Remp et al"},"object":{"type":"operator","id":"L16825","name":"Remp Sand & Gravel Inc"},"validFrom":"2006-06-22","validTo":"2018-06-12","current":false,"derived":true,"evidenceMineId":"2402454","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|L16825|2006-06-22|M12850|1999-08-02|154786"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0141461","name":"Kathleen K Remp"},"object":{"type":"mine","id":"2402454","name":"Crusher #2"},"validFrom":"2018-06-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|0141461|2018-06-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0141461","name":"Kathleen K Remp"},"object":{"type":"operator","id":"L16825","name":"Remp Sand & Gravel Inc"},"validFrom":"2018-06-13","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402454","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402454|L16825|2006-06-22|0141461|2018-06-13|28632"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2402454","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"}}