{"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":"4403800","name":"No 1 Strip"},"operator":{"type":"operator","id":"P03274","name":"Deena Coal Company Inc"},"controller":{"type":"controller","id":"C02644","name":"Dotson Dexter"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02991","name":"Deena Coal Company"},"object":{"type":"mine","id":"4403800","name":"No 1 Strip"},"validFrom":"1974-01-01","validTo":"1976-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|P02991|1974-01-01|1976-09-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02398","name":"Chester Avis"},"object":{"type":"mine","id":"4403800","name":"No 1 Strip"},"validFrom":"1974-01-01","validTo":"1976-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|C02398|1974-01-01|1976-09-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02398","name":"Chester Avis"},"object":{"type":"operator","id":"P02991","name":"Deena Coal Company"},"validFrom":"1974-01-01","validTo":"1976-09-20","current":false,"derived":true,"evidenceMineId":"4403800","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|P02991|1974-01-01|C02398|1974-01-01|58346"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03274","name":"Deena Coal Company Inc"},"object":{"type":"mine","id":"4403800","name":"No 1 Strip"},"validFrom":"1976-09-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|P03274|1976-09-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02644","name":"Dotson Dexter"},"object":{"type":"mine","id":"4403800","name":"No 1 Strip"},"validFrom":"1976-09-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|C02644|1976-09-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02644","name":"Dotson Dexter"},"object":{"type":"operator","id":"P03274","name":"Deena Coal Company Inc"},"validFrom":"1976-09-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"4403800","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4403800|P03274|1976-09-21|C02644|1976-09-21|60321"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4403800","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"}}