{"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":"4403399","name":"No 1 Strip"},"operator":{"type":"operator","id":"P03925","name":"Cardinal Coal Corp"},"controller":{"type":"controller","id":"C07202","name":"Dotson Freddie"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06359","name":"Elkins Energy Corp"},"object":{"type":"mine","id":"4403399","name":"No 1 Strip"},"validFrom":"1950-01-01","validTo":"1979-03-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403399|P06359|1950-01-01|1979-03-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01091","name":"Elkins Charles C Et Al"},"object":{"type":"mine","id":"4403399","name":"No 1 Strip"},"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":"4403399|C01091|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01091","name":"Elkins Charles C Et Al"},"object":{"type":"operator","id":"P06359","name":"Elkins Energy Corp"},"validFrom":"1950-01-01","validTo":"1979-03-16","current":false,"derived":true,"evidenceMineId":"4403399","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403399|P06359|1950-01-01|C01091|1950-01-01|52189"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03925","name":"Cardinal Coal Corp"},"object":{"type":"mine","id":"4403399","name":"No 1 Strip"},"validFrom":"1979-03-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403399|P03925|1979-03-17|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07202","name":"Dotson Freddie"},"object":{"type":"mine","id":"4403399","name":"No 1 Strip"},"validFrom":"1979-03-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403399|C07202|1979-03-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07202","name":"Dotson Freddie"},"object":{"type":"operator","id":"P03925","name":"Cardinal Coal Corp"},"validFrom":"1979-03-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"4403399","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403399|P03925|1979-03-17|C07202|1979-03-17|74092"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4403399","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"}}