{"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":"4605984","name":"Marion #4 Strip"},"operator":{"type":"operator","id":"P09362","name":"Farkas Coal Company"},"controller":{"type":"controller","id":"C07373","name":"Farkas Andrew"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04112","name":"Brooks Arthur E & Ronald G"},"object":{"type":"mine","id":"4605984","name":"Marion #4 Strip"},"validFrom":"1977-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|C04112|1977-03-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P04976","name":"B & F Coal Company"},"object":{"type":"mine","id":"4605984","name":"Marion #4 Strip"},"validFrom":"1979-04-01","validTo":"1980-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|P04976|1979-04-01|1980-04-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04112","name":"Brooks Arthur E & Ronald G"},"object":{"type":"operator","id":"P04976","name":"B & F Coal Company"},"validFrom":"1979-04-01","validTo":"1980-04-02","current":false,"derived":true,"evidenceMineId":"4605984","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|P04976|1979-04-01|C04112|1977-03-01|64777"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07373","name":"Farkas Andrew Et Al"},"object":{"type":"mine","id":"4605984","name":"Marion #4 Strip"},"validFrom":"1979-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|C07373|1979-05-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P09362","name":"Farkas Coal Company"},"object":{"type":"mine","id":"4605984","name":"Marion #4 Strip"},"validFrom":"1980-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|P09362|1980-04-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07373","name":"Farkas Andrew Et Al"},"object":{"type":"operator","id":"P09362","name":"Farkas Coal Company"},"validFrom":"1980-04-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"4605984","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605984|P09362|1980-04-03|C07373|1979-05-01|74440"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4605984","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"}}