{"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":"2026-10-17T05:35:58.500035+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":"4105549","name":"Ronald Reagan Plant"},"operator":{"type":"operator","id":"0083684","name":"Central Texas Stone & Aggregate"},"controller":{"type":"controller","id":"0184681","name":"CBC Partners  LTD; Joe  Bland"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0070611","name":"Joe E  Bland"},"object":{"type":"mine","id":"4105549","name":"Ronald Reagan Plant"},"validFrom":"2007-10-04","validTo":"2024-02-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0070611|2007-10-04|2024-02-06"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0083684","name":"Central Texas Stone & Aggregate"},"object":{"type":"mine","id":"4105549","name":"Ronald Reagan Plant"},"validFrom":"2021-02-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0083684|2021-02-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0070611","name":"Joe E  Bland"},"object":{"type":"operator","id":"0083684","name":"Central Texas Stone & Aggregate"},"validFrom":"2021-02-06","validTo":"2024-02-06","current":false,"derived":true,"evidenceMineId":"4105549","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0083684|2021-02-06|0070611|2007-10-04|10128"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0184681","name":"Joe  Bland et al"},"object":{"type":"mine","id":"4105549","name":"Ronald Reagan Plant"},"validFrom":"2024-02-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0184681|2024-02-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0184681","name":"Joe  Bland et al"},"object":{"type":"operator","id":"0083684","name":"Central Texas Stone & Aggregate"},"validFrom":"2024-02-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105549","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0083684|2021-02-06|0184681|2024-02-07|39388"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0184681","name":"CBC Partners  LTD et al"},"object":{"type":"operator","id":"0083684","name":"Central Texas Stone & Aggregate"},"validFrom":"2024-02-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105549","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105549|0083684|2021-02-06|0184681|2024-02-07|39389"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4105549","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}