{"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":"1508090","name":"Green Grove Mine"},"operator":{"type":"operator","id":"P02644","name":"Far-Del Coal Co Inc & Intercontinental Coal Inc"},"controller":{"type":"controller","id":"C02280","name":"Vitale Louis"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02643","name":"Green Grove Coal Company"},"object":{"type":"mine","id":"1508090","name":"Green Grove Mine"},"validFrom":"1975-02-04","validTo":"1975-06-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|P02643|1975-02-04|1975-06-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02279","name":"Nesbit William A Iii"},"object":{"type":"mine","id":"1508090","name":"Green Grove Mine"},"validFrom":"1975-02-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|C02279|1975-02-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02279","name":"Nesbit William A Iii"},"object":{"type":"operator","id":"P02643","name":"Green Grove Coal Company"},"validFrom":"1975-02-04","validTo":"1975-06-20","current":false,"derived":true,"evidenceMineId":"1508090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|P02643|1975-02-04|C02279|1975-02-04|58023"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02644","name":"Far-Del Coal Co Inc & Intercontinental Coal Inc"},"object":{"type":"mine","id":"1508090","name":"Green Grove Mine"},"validFrom":"1975-06-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|P02644|1975-06-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02280","name":"Vitale Louis"},"object":{"type":"mine","id":"1508090","name":"Green Grove Mine"},"validFrom":"1975-06-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|C02280|1975-06-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02280","name":"Vitale Louis"},"object":{"type":"operator","id":"P02644","name":"Far-Del Coal Co Inc & Intercontinental Coal Inc"},"validFrom":"1975-06-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"1508090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508090|P02644|1975-06-21|C02280|1975-06-21|58026"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1508090","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"}}