{"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":"3609642","name":"Lombardo Quarry"},"operator":{"type":"operator","id":"0052249","name":"Bennett Stone"},"controller":{"type":"controller","id":"0043059","name":"Anthony P  Bennett"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13774","name":"John  Strope"},"object":{"type":"mine","id":"3609642","name":"Lombardo Quarry"},"validFrom":"2001-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|M13774|2001-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043059","name":"Anthony P  Bennett"},"object":{"type":"mine","id":"3609642","name":"Lombardo Quarry"},"validFrom":"2004-04-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|0043059|2004-04-06|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18057","name":"Strope's Flagstone"},"object":{"type":"mine","id":"3609642","name":"Lombardo Quarry"},"validFrom":"2008-07-08","validTo":"2011-10-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|L18057|2008-07-08|2011-10-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13774","name":"John  Strope"},"object":{"type":"operator","id":"L18057","name":"Strope's Flagstone"},"validFrom":"2008-07-08","validTo":"2011-10-20","current":false,"derived":true,"evidenceMineId":"3609642","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|L18057|2008-07-08|M13774|2001-01-01|157031"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0052249","name":"Bennett Stone"},"object":{"type":"mine","id":"3609642","name":"Lombardo Quarry"},"validFrom":"2011-10-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|0052249|2011-10-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043059","name":"Anthony P  Bennett"},"object":{"type":"operator","id":"0052249","name":"Bennett Stone"},"validFrom":"2011-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609642","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609642|0052249|2011-10-21|0043059|2004-04-06|4443"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609642","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"}}