{"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":"2100511","name":"Cedar Rapids #14644"},"operator":{"type":"operator","id":"L01853","name":"Engel'S Truck Service Inc"},"controller":{"type":"controller","id":"M01667","name":"Engel Elwood"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00093","name":"Fairway Construction Inc"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1950-01-01","validTo":"1980-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00093|1950-01-01|1980-07-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00043","name":"Neil  Sing"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|M00043|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00043","name":"Neil  Sing"},"object":{"type":"operator","id":"L00093","name":"Fairway Construction Inc"},"validFrom":"1950-01-01","validTo":"1980-07-14","current":false,"derived":true,"evidenceMineId":"2100511","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00093|1950-01-01|M00043|1950-01-01|102482"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00294","name":"Bauerly Brothers Inc"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1950-01-01","validTo":"2001-04-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|M00294|1950-01-01|2001-04-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01667","name":"Engel Elwood"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|M01667|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00358","name":"Bauerly Brothers Inc"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1980-07-15","validTo":"1981-06-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00358|1980-07-15|1981-06-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00294","name":"Bauerly Brothers Inc"},"object":{"type":"operator","id":"L00358","name":"Bauerly Brothers Inc"},"validFrom":"1980-07-15","validTo":"1981-06-09","current":false,"derived":true,"evidenceMineId":"2100511","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00358|1980-07-15|M00294|1950-01-01|109062"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01853","name":"Engel'S Truck Service Inc"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"1981-06-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L01853|1981-06-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01667","name":"Engel Elwood"},"object":{"type":"operator","id":"L01853","name":"Engel'S Truck Service Inc"},"validFrom":"1981-06-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"2100511","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L01853|1981-06-10|M01667|1950-01-01|120160"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"2001-04-26","validTo":"2023-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|M09717|2001-04-26|2023-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"operator","id":"L00358","name":"Bauerly Brothers Inc"},"validFrom":"2001-04-26","validTo":"1981-06-09","current":false,"derived":true,"evidenceMineId":"2100511","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00358|1980-07-15|M09717|2001-04-26|147174"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0176802","name":"Knife River Corporation"},"object":{"type":"mine","id":"2100511","name":"Cedar Rapids #14644"},"validFrom":"2023-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|0176802|2023-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0176802","name":"Knife River Corporation"},"object":{"type":"operator","id":"L00358","name":"Bauerly Brothers Inc"},"validFrom":"2023-06-01","validTo":"1981-06-09","current":false,"derived":true,"evidenceMineId":"2100511","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2100511|L00358|1980-07-15|0176802|2023-06-01|37691"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2100511","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"}}