{"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":"4406085","name":"#1 Preparation Plant"},"operator":{"type":"operator","id":"P13184","name":"J A D Coal Company Inc"},"controller":{"type":"controller","id":"0072411","name":"U S Coal Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00445","name":"Carl E  McAfee et al"},"object":{"type":"mine","id":"4406085","name":"#1 Preparation Plant"},"validFrom":"1982-03-12","validTo":"2008-04-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|C00445|1982-03-12|2008-04-17"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13184","name":"J A D Coal Company Inc"},"object":{"type":"mine","id":"4406085","name":"#1 Preparation Plant"},"validFrom":"1984-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|P13184|1984-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00445","name":"Carl E  McAfee et al"},"object":{"type":"operator","id":"P13184","name":"J A D Coal Company Inc"},"validFrom":"1984-04-01","validTo":"2008-04-17","current":false,"derived":true,"evidenceMineId":"4406085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|P13184|1984-04-01|C00445|1982-03-12|47172"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00445","name":"Aubra P  Dean et al"},"object":{"type":"operator","id":"P13184","name":"J A D Coal Company Inc"},"validFrom":"1984-04-01","validTo":"2008-04-17","current":false,"derived":true,"evidenceMineId":"4406085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|P13184|1984-04-01|C00445|1982-03-12|47173"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0072411","name":"U S Coal Corporation"},"object":{"type":"mine","id":"4406085","name":"#1 Preparation Plant"},"validFrom":"2008-04-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|0072411|2008-04-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0072411","name":"U S Coal Corporation"},"object":{"type":"operator","id":"P13184","name":"J A D Coal Company Inc"},"validFrom":"2008-04-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"4406085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4406085|P13184|1984-04-01|0072411|2008-04-18|11215"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4406085","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"}}