{"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":"2026-10-17T05:35:58.500035+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":"2402017","name":"Kolberg Crusher/Wash Plant"},"operator":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"controller":{"type":"controller","id":"M11763","name":"Imerys S A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"mine","id":"2402017","name":"Kolberg Crusher/Wash Plant"},"validFrom":"1992-07-01","validTo":"2011-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402017|M01812|1992-07-01|2011-07-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"object":{"type":"mine","id":"2402017","name":"Kolberg Crusher/Wash Plant"},"validFrom":"1993-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402017|L12671|1993-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"validFrom":"1993-06-01","validTo":"2011-07-31","current":false,"derived":true,"evidenceMineId":"2402017","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402017|L12671|1993-06-01|M01812|1992-07-01|121423"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"mine","id":"2402017","name":"Kolberg Crusher/Wash Plant"},"validFrom":"2011-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402017|M11763|2011-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"validFrom":"2011-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402017","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402017|L12671|1993-06-01|M11763|2011-08-01|152366"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2402017","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}