{"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":"1507276","name":"No 1 Surface"},"operator":{"type":"operator","id":"P08813","name":"Royal Coal Corp"},"controller":{"type":"controller","id":"C06356","name":"Weddington Joe D"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05086","name":"Hurn Franklin M & Raymond A Smego"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"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":"1507276|C05086|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08109","name":"Royal Coal Corp"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"validFrom":"1974-08-20","validTo":"1977-12-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P08109|1974-08-20|1977-12-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06528","name":"Justice Muncy"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"validFrom":"1974-08-20","validTo":"1977-12-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|C06528|1974-08-20|1977-12-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06528","name":"Justice Muncy"},"object":{"type":"operator","id":"P08109","name":"Royal Coal Corp"},"validFrom":"1974-08-20","validTo":"1977-12-09","current":false,"derived":true,"evidenceMineId":"1507276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P08109|1974-08-20|C06528|1974-08-20|72075"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06157","name":"F & R Coal Company Inc"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"validFrom":"1977-12-10","validTo":"1978-09-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P06157|1977-12-10|1978-09-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05086","name":"Hurn Franklin M & Raymond A Smego"},"object":{"type":"operator","id":"P06157","name":"F & R Coal Company Inc"},"validFrom":"1977-12-10","validTo":"1978-09-24","current":false,"derived":true,"evidenceMineId":"1507276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P06157|1977-12-10|C05086|1950-01-01|67450"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08813","name":"Royal Coal Corp"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"validFrom":"1978-09-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P08813|1978-09-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06356","name":"Weddington Joe D"},"object":{"type":"mine","id":"1507276","name":"No 1 Surface"},"validFrom":"1978-09-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|C06356|1978-09-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06356","name":"Weddington Joe D"},"object":{"type":"operator","id":"P08813","name":"Royal Coal Corp"},"validFrom":"1978-09-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1507276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1507276|P08813|1978-09-25|C06356|1978-09-25|71572"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1507276","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"}}