{"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":"4105295","name":"Portable Plant 01"},"operator":{"type":"operator","id":"L16618","name":"Texas Materials Group Inc."},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"mine","id":"4105295","name":"Portable Plant 01"},"validFrom":"1999-07-01","validTo":"2006-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|M00049|1999-07-01|2006-08-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"4105295","name":"Portable Plant 01"},"validFrom":"2006-08-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|M06183|2006-08-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"4105295","name":"Portable Plant 01"},"validFrom":"2014-05-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|M06183|2014-05-27|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0133455","name":"Oldcastle Materials Texas Inc."},"object":{"type":"mine","id":"4105295","name":"Portable Plant 01"},"validFrom":"2017-09-07","validTo":"2020-02-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|0133455|2017-09-07|2020-02-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"0133455","name":"Oldcastle Materials Texas Inc."},"validFrom":"2017-09-07","validTo":"2020-02-24","current":false,"derived":true,"evidenceMineId":"4105295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|0133455|2017-09-07|M06183|2014-05-27|137535"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16618","name":"Texas Materials Group Inc."},"object":{"type":"mine","id":"4105295","name":"Portable Plant 01"},"validFrom":"2020-02-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|L16618|2020-02-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"operator","id":"L16618","name":"Texas Materials Group Inc."},"validFrom":"2020-02-25","validTo":"2006-08-27","current":false,"derived":true,"evidenceMineId":"4105295","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|L16618|2020-02-25|M00049|1999-07-01|102903"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L16618","name":"Texas Materials Group Inc."},"validFrom":"2020-02-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105295|L16618|2020-02-25|M06183|2006-08-28|137386"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4105295","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"}}