{"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":"1510973","name":"No 1 Surface"},"operator":{"type":"operator","id":"P08937","name":"T C Bell Inc"},"controller":{"type":"controller","id":"C00029","name":"Swanton Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07839","name":"T C Bell Inc"},"object":{"type":"mine","id":"1510973","name":"No 1 Surface"},"validFrom":"1977-12-01","validTo":"1978-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|P07839|1977-12-01|1978-07-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06336","name":"Billy Ray  Carroll"},"object":{"type":"mine","id":"1510973","name":"No 1 Surface"},"validFrom":"1977-12-01","validTo":"1978-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|C06336|1977-12-01|1978-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06336","name":"Billy Ray  Carroll"},"object":{"type":"operator","id":"P07839","name":"T C Bell Inc"},"validFrom":"1977-12-01","validTo":"1978-07-31","current":false,"derived":true,"evidenceMineId":"1510973","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|P07839|1977-12-01|C06336|1977-12-01|71524"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08937","name":"T C Bell Inc"},"object":{"type":"mine","id":"1510973","name":"No 1 Surface"},"validFrom":"1978-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|P08937|1978-08-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00029","name":"Swanton Corp"},"object":{"type":"mine","id":"1510973","name":"No 1 Surface"},"validFrom":"1978-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|C00029|1978-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00029","name":"Swanton Corp"},"object":{"type":"operator","id":"P08937","name":"T C Bell Inc"},"validFrom":"1978-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1510973","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510973|P08937|1978-08-01|C00029|1978-08-01|43677"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1510973","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"}}