{"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":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"operator":{"type":"operator","id":"0132073","name":"Ernst Aggregates"},"controller":{"type":"controller","id":"0197400","name":"Collin  Ernst"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00239","name":"George E  Kling"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|M00239|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L36003","name":"Martz Concrete Company Inc"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"1950-01-01","validTo":"2008-05-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|L36003|1950-01-01|2008-05-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M36003","name":"James V  Martz et al"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|M36003|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M36003","name":"James V  Martz et al"},"object":{"type":"operator","id":"L36003","name":"Martz Concrete Company Inc"},"validFrom":"1950-01-01","validTo":"2008-05-15","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|L36003|1950-01-01|M36003|1950-01-01|165026"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M36003","name":"Dale R  Martz et al"},"object":{"type":"operator","id":"L36003","name":"Martz Concrete Company Inc"},"validFrom":"1950-01-01","validTo":"2008-05-15","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|L36003|1950-01-01|M36003|1950-01-01|165027"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00295","name":"Moraine Materials Company"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2008-05-16","validTo":"2010-10-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|L00295|2008-05-16|2010-10-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00239","name":"George E  Kling"},"object":{"type":"operator","id":"L00295","name":"Moraine Materials Company"},"validFrom":"2008-05-16","validTo":"2010-10-18","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|L00295|2008-05-16|M00239|1950-01-01|108054"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0114605","name":"Central Ready Mix L.L.C."},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2010-10-19","validTo":"2013-11-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0114605|2010-10-19|2013-11-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0097133","name":"Robert R  Cherry"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2010-10-19","validTo":"2011-08-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0097133|2010-10-19|2011-08-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0097133","name":"Robert R  Cherry"},"object":{"type":"operator","id":"0114605","name":"Central Ready Mix L.L.C."},"validFrom":"2010-10-19","validTo":"2011-08-28","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0114605|2010-10-19|0097133|2010-10-19|15935"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0101229","name":"Justin  Blomberg"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2011-08-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0101229|2011-08-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0101229","name":"Justin  Blomberg"},"object":{"type":"operator","id":"0114605","name":"Central Ready Mix L.L.C."},"validFrom":"2011-08-29","validTo":"2013-11-15","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0114605|2010-10-19|0101229|2011-08-29|17069"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0132073","name":"Ernst Aggregates"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2013-11-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0132073|2013-11-16|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08349","name":"John  Ernst"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2013-11-16","validTo":"2025-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|M08349|2013-11-16|2025-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08349","name":"John  Ernst"},"object":{"type":"operator","id":"0132073","name":"Ernst Aggregates"},"validFrom":"2013-11-16","validTo":"2025-12-31","current":false,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0132073|2013-11-16|M08349|2013-11-16|143214"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0197400","name":"Collin  Ernst"},"object":{"type":"mine","id":"3301463","name":"Eagle Materials LLC DBA Ernst AggPlant 7"},"validFrom":"2026-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0197400|2026-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0197400","name":"Collin  Ernst"},"object":{"type":"operator","id":"0132073","name":"Ernst Aggregates"},"validFrom":"2026-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3301463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3301463|0132073|2013-11-16|0197400|2026-01-01|42102"}}],"coverage":{"historyRecords":7,"edgeCount":17,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3301463","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"}}