{"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":"1510064","name":"No 1 Surface"},"operator":{"type":"operator","id":"P06589","name":"Mey Nart Coal Company"},"controller":{"type":"controller","id":"C05472","name":"Flavin Raymond & Eugene Schwartz"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06137","name":"Toler Creek Mining Company Inc"},"object":{"type":"mine","id":"1510064","name":"No 1 Surface"},"validFrom":"1976-10-01","validTo":"1977-03-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|P06137|1976-10-01|1977-03-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04977","name":"Holsclaw J Douglas"},"object":{"type":"mine","id":"1510064","name":"No 1 Surface"},"validFrom":"1976-10-01","validTo":"1977-03-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|C04977|1976-10-01|1977-03-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04977","name":"Holsclaw J Douglas"},"object":{"type":"operator","id":"P06137","name":"Toler Creek Mining Company Inc"},"validFrom":"1976-10-01","validTo":"1977-03-29","current":false,"derived":true,"evidenceMineId":"1510064","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|P06137|1976-10-01|C04977|1976-10-01|67158"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06589","name":"Mey Nart Coal Company"},"object":{"type":"mine","id":"1510064","name":"No 1 Surface"},"validFrom":"1977-03-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|P06589|1977-03-30|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05472","name":"Flavin Raymond & Eugene Schwartz"},"object":{"type":"mine","id":"1510064","name":"No 1 Surface"},"validFrom":"1977-03-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|C05472|1977-03-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05472","name":"Flavin Raymond & Eugene Schwartz"},"object":{"type":"operator","id":"P06589","name":"Mey Nart Coal Company"},"validFrom":"1977-03-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"1510064","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1510064|P06589|1977-03-30|C05472|1977-03-30|68920"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1510064","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"}}