{"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":"0901206","name":"J.C. Plant"},"operator":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"controller":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"mine","id":"0901206","name":"J.C. Plant"},"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":"0901206|M00452|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01491","name":"Mike L  Watson et al"},"object":{"type":"mine","id":"0901206","name":"J.C. Plant"},"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":"0901206|M01491|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01663","name":"Brown & Watson Inc."},"object":{"type":"mine","id":"0901206","name":"J.C. Plant"},"validFrom":"2010-10-25","validTo":"2024-04-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0901206|L01663|2010-10-25|2024-04-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01491","name":"Mike L  Watson et al"},"object":{"type":"operator","id":"L01663","name":"Brown & Watson Inc."},"validFrom":"2010-10-25","validTo":"2024-04-15","current":false,"derived":true,"evidenceMineId":"0901206","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0901206|L01663|2010-10-25|M01491|1950-01-01|118864"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"object":{"type":"mine","id":"0901206","name":"J.C. Plant"},"validFrom":"2024-04-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0901206|L06514|2024-04-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"validFrom":"2024-04-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"0901206","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0901206|L06514|2024-04-16|M00452|1950-01-01|111064"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0901206","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"}}